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The science of intelligent decision making in the face of uncertainty and is used in many disciplines, such as financial analysis, and marketing research.
Which of the following is incorrectly evaluated
Brand Name
This is a is a statistical measure that is frequently used to indicate the probability of a specific number of successes occurring from a specific number of independent trials.
Imagine that you are the banker of the game "deal or no deal". Supposing that you are tasked to make an offer worth 30% lower than the mean of the remaining amounts contained in the unopened briefcases. There are only three briefcases left unopened, one chosen by the player and two with the deal or no deal ladies . The remaining amounts are Php1,000,000, Php700,000 and Php100,000. What amount will you offer to the player?
There are 52 cards in an ordinary deck of cards. If you will be drawing one card. What is the probability that it is a heart or a spade?
In a study, subjects are randomly assigned to one of three groups: control, experimental A, or experimental B. After treatment, the mean scores for the three groups are compared. The appropriate statistical test for comparing these means is:
In a normal distribution,
In this type of distribution, the number of successes is fixed and the number of trials varies. The function calculates the probability of a given number of failures occurring, before a fixed number of successes.
This is the maximum value of the probability of rejecting the hypothesis when in fact it is true
This refers to the drawing of conclusion from the analyzed data
Analyze the data and determine whether it is positively skewed or negatively skewed: Mean = 30, Median = 10, Standard deviation 20
This is the science of good decision making in the face of uncertainty and is used in many disciplines such as financial analysis, econometrics, auditing, production and operations including services improvement, and marketing research.
Classify: Years of Experience
Gross Sales per day
A normal deck of playing cards consists of 52 cards. If you will draw one card, what is the probability that you can get a black card?
Tell whether Descriptive or Inferential Statistics: The production manager tests if the products are okay by getting samples from the total products manufactured. Later on, he concluded that the products are not okay and needs d to be repaired.
Which of the following is not included in the group [2]
In an ANOVA result, if p value is equal to 0.54 and α is equal to 0.10. We must
Taxable Income
The test is applied when you have two categorical variables from a single population. It is used to determine whether there is a significant association between the two variables.
In this type skewness, median is greater than the mean but less than the mode
You have two Php 20 bills and three Php 50 bills on your poket. If you will be drawing 2 bills in your pocket, what is the probability that you can get at least Php 40?
If you flip a coin twice, what is the probability of getting at least one tail?
Which statement is false? [2]
The company has 3 delivery vans. In how many ways can the vans be parked in a row?
This sampling technique is used when the researcher does not have the data regarding the population
Which statement is true?
A new fertilizer has been developed to increase the yield on crops, and the makers of the fertilizer want to better understand which of the three formulations (blends) of this fertilizer are most effective for wheat, corn, soy beans and rice (crops). They test each of the three blends on one sample of each of the four types of crops. What statistical method can be best used in the situation?
A process by which we estimate the value of dependent variable on the basis of one or more independent variables is called:
Which is incorrect?
Which statement is false? [5]
Which statement is false? [6]
The standard deviation is a measure of ___________ of a frequency distribution?
Which statement is false?
A company has 25 rank and file employees. They are planning to have an organization. In how many ways can they elect a president, vice president, secretary and treasurer?
Classify: Height
Analyze the data and determine whether it is positively skewed or negatively skewed: Mean = 10, Median = 30, Standard deviation 20
Which is not included in the group
Which statement is false? [4]
Classify: Brand Name
Identify the the basic form of probability sampling
In the regression equation Y = a + bX, b is called:
Identify the probability distribution being described by the statement below What is the probability of having exactly 7 tails before 8 heads?
Analyze the excel sheet formula and identify which that does not belong to the group
Office Address
Analyze the situation given and tell whether the situation will make use of Descriptive or Inferential Statistics: The manager computes the average income in a week.
The average number of homes sold by the a realty company is 2 homes per day. What is the probability that greater than 3 homes will be sold tomorrow?
Find the population used if sample size computed is 90 at 10% margin of error
Which statement is false? [8]
This is an assumption of relationship between variables
Census of population is an example of
If there are 20 students currently enrolled BSBA-MIS. In how many ways can elect a president and vice president?
Which statement is false? [3]
What can you say about the distribution's skewness given the following data Mean=20 Mode = 10 Median=15
Find the margin of error used if sample size computed is 90 at and population is 900.
Find the margin of error used if sample size computed is 50 at and population is 100.
Variance refers to
If the probability that x ≥ 6 is 10%. What is the probability that x<6?
A hypothesis that is intended for statistical test is generally stated in ________ form.
Which statement is false? [7]
Which can be considered as median?
Among the measures of central tendency, which is easily affected by extreme values?
What will be your decision if the absolute calculated value is greater than the tabular value?
When you are dealing with a very large population such as the total residents of the Philippines, which sampling technique can be best used?
There are 7 applicants for a job, in how many ways can you select 2 applicants to occupy the vacant positions?
A new fertilizer has been developed to increase the yield on crops, and the makers of the fertilizer want to better understand which of the three formulations (blends) of this fertilizer are most effective for wheat, corn, soy beans and rice (crops). They test each of the three blends on one sample of each of the four types of crops. After that, they repeated the experiment for 5 times in order to ensure that the results are consistent. What statistical method can be best used in the situation?
Identify the technique where samples are chosen only when the researcher meets them by chance
This used to test the significance of the difference between means of two or more sets of data simultaneously.
Identify the area where statistics is being applied: Business entities usually use statistical modeling for predicting budgets and capital expenditures based on the past data of the entity and other relevant variables considered.
With a 0.5 probability of success in each of your 5 business investments, what is the probability that you will make profit in exactly 2 of your investments?
Evaluate 55!
Analyze the data and determine the kurtosis: 40, 30, 10, 5, 15
In an employment exam, 3 applicants got a score of 21-30 while 4 applicants got 31-40. What is the median class?
In this type skewness, median is greater than the mode but less than the mean
Which of the following is a continuous random variable?
Average Monthly Expense
The following are the stock prices of FPL Co. from October 9-15
It is the process of extracting relevant information from presented data using statistical methods and procedures
Tell whether Descriptive or Inferential Statistics: The engineer calculates the average height of buildings in a city.
Which is incorrect? [2]
The variance of the final grades of 50 students is equal to 16, what is the value of standard deviation?
If the probability that x = 6 is 25%, what is the probability that x will not be equal to 6?
Given the following data, 10, 15, 10, 20, 15, 25, 10. What is the median?
Compute for the sample size, given the following data: Population = 1000, margin of error 10%.
Which statement is false? [9]
In regression analysis, the variable that is being predicted is the
There are 10 employees in a small business firm. From these employees, two of them have a salary of Php20,000; three of them receive Php25,000; four of them receive Php30,000; lastly the manager's salary is not given. Supposing that the average salary of the 10 employees is worth Php29,000, what is the range amount of their salaries?
Suppose that the amount of time one spends in a bank is exponentially distributed with mean 10 minutes, ? = 1/10. What is the probability that a customer will spend at most 15 minutes in the bank?
A set data has five elements having a mode of 6. Find missing data 10, 4, 6, 7, _
If the correlation coefficient is a positive value, then the slope of the regression line
Evaluate the formula and identify the correct expression
Which of the following statements best describes descriptive statistics
If the probability that x ≤ 20 is 65% and the probability that x<20 is 20%, what is the probability that x≠20?
Which statement is incorrect?
This is a method that simultaneously examines the effect of two factors on the dependent variable, along with the effects of interactions between the different levels of these two factors.
Analyze the excel sheet formula and identify which one does not belong to the group
Null Hypothesis: There is no significant difference between the age and income level of employees under the entertainment industry.
Age
Employment Status
Classify: Time taken to produce one product
Identify the area where statistics is being described: Statistics is used in deciding whether to accept, reject or rework a certain product.
Type of Business
Classify: Data gathered from experiment
You have two Php 20 bills and three Php 50 bills on your poket. If you will be drawing 2 bills in your pocket, what is the probability that you can get at a total of Php 150?
Which method is the most time consuming?
Using stratified random sampling, you need obtain 300 samples from a community consisting of 2,000 individuals belonging to different income brackets. 300 individuals belong to the high income earners; 1200 are average income earners; and 500 are low-income earners. How many samples will you obtain from the group of low-income earners?
This type of statistical test is used when relationship of two or more variables are said to be "not equal to" or the problem has no condition.
Occupation
Three different sale closing methods were used. Three groups of four salespeople were randomly chosen. Each group was instructed to use only one of the closing methods for all of their sales. Sales totals of each salesperson over the next two weeks were collected. What statistical method can be best used in the situation?
If both variables X and Y increase or decrease simultaneously, then the coefficient of correlation will be:
Seller, A, B and C records their transaction under the accrual basis. They had a profit of Php 10,000, Php20,000 and Php15,000 respectively. Calculate the mean or average income of the 3 sellers after the following accounting adjustments. Seller A received Php1,000 as payment for past recorded receivable Seller B forgot to record electricity expense worth Php1,200 Seller C paid accrued expenses worth Php2,000
What can you infer from the following data, 10, 15, 10, 20, 15, 25, 10.
Statement 1. Gosset formulated the t-test Statement 2.Egon Pearson was the one who formulated the Pearson chi-square test
Identify the area where statistics is being described: Statistics provide useful information on how much goods should be kept and how much can be possibly sold at a certain period of time.
Analyze the situation given and tell whether the situation will make use of Descriptive or Inferential Statistics: The cashier gathers the receipts and totals the income every day.
Given the following data 10, 20, 30, 40, 50. Find the population variance.
This examines two or more independent samples based on multiple characteristics. In this method, the data must be balanced and factors must be fixed.
Educationally speaking, Mr. P is a researcher who studies the economics of legal prostitution, He plans to conduct a survey study but because of the sensitive topic, he has no access and no idea regarding the population of study. He only know one respondent and that was Ms Cute, after the productive survey with her, Mr. P asked if she knows someone who is willing to cooperate with his research, Ms Cute then brings Mr. P to Miss Beautiful. After doing the same thing, Mr. P requested Ms Beautiful if she knows another respondent who is willing to cooperate, Ms Beautiful then brings him to Ms Chaka. What sampling method was used by Mr. P?
Given the following data 10, 20, 30, 40, 50. Find the sample variance.
Which is equivalent to Q2
Analyze the statement and identify the one depicting two tailed test
This test is applied when you have one categorical variable from a single population. It is used to determine whether sample data are consistent with a hypothesized distribution.
In how many ways can you arrange 5 people in a line?
This examines two or more independent samples based on an individual characteristic to determine whether their population means could be equal by comparing their variability between groups and within groups.
The main purpose of descriptive statistics is to:
The correlation coefficient is used to determine:
Classify: Data gathered from personal observation
The average number of homes sold by the Acme Realty company is 2 homes per day. What is the probability that exactly 3 homes will be sold tomorrow?
Classify: Data gathered from books
If sample size is 5,000, when margin of error is 1%, what is the size of the population?
When you toss a coin for 10 times, what is the probability that you will get exactly 5 heads?
The average sugar intake of a person is 80 grams per day, with a standard deviation of 5 grams. What is the probability that a randomly chosen person has greater than 75 grams of sugar intake per day?
If a group of data has a variance of 1000, what is the standard deviation?
Which of the following is not included in the group
Statement 1. Factorial notation is the result of multiplying a sequence of descending numbers. Statement 2. Combination refers to the arrangement of objects with reference to order.
You want to find the most popular brand of cologne used by employees. What is the most appropriate measure to be used?
Analyze the data and determine the kurtosis: 10, 20, 30, 40, 50
This is used to draw generalizations, interpretations or conclusions about the properties or characteristics by a large group of people, places or things on the basis of the information obtained from a portion of a whole.
Mr. P, a researcher of the National Internal Revenue, was tasked to make a research regarding open tax cases of businesses from the 18 regions of the country. He selected 3 provinces on each region. After that, he selected 3 municipalities from each province. From each of the municipalities, he draws 10 registered businesses systematically from their list. What is the sampling method used by Mr. P?
You are in charged of the repacking of goods. There are 2 types of canned sardines, 3 types of rice and 2 types of noodles. How many combinations can you make if you are only allowed to pick one per product?
When you roll a dice, what is the probability of getting an odd number?
If you will be tossing a coin first then you will roll a dice. What is the probability of getting a head and a number 4?
This examines whether samples are different and is commonly used when the variances of normal distributions are unknown and when an experiment uses a small sample size.
If the value of mean, median and mode are equal, the distribution is said to be
Euler's number is equal to
What will be your decision if the p value is less than the level of significance used?
0! is equal to
A researcher was assigned to obtain respondents from a certain municipality, he was tasked to determine the reaction of residents' of a certain municipality regarding the proposed increase in monthly pension of retired people. He was told to have 200 female and 300 male respondents between the age of 45 and 60. What is the sampling method used by the researcher?
In our discussion, what is the third step in hypothesis testing?
Classify: Taxable Income
What do you call a variable whose value is subject to variations due to chance. It can take on a set of possible different values, each with an associated probability.
In an employment exam, 3 applicants got a score of 21-30 while 4 applicants got 31-40. Compute the mean of the grouped data.
It is used when the relationship between two or more variables in the problem is believed to be greater than, lesser than, at most, at least, maximum and minimum
Years of experience
In how many ways can you arrange 5 people in a circle?
Classfy: Monthly Salary
The current foreign exchange rate is USD 1 = Php 45. Assuming that the probability that the rate will be 1 USD = Php 40 is 0.7, and the probability that it will be USD 1= Php 46 is 0.2, the probability that it will remain the same is 0.1. What is the expected foreign exchange rate rate? (Average)
Analyze the situation and identify what type of distribution function to be used. When you venture into a business for 5 times, what is the probability that you will get make profit for 3 times?
Supposing that there are 7 distinct chairs to be arranged in a round table. How many possible arrangements will there be?
Classify: Data gathered from interview
Which of the following has a mean of 25
In our discussion, what is the fourth step in hypothesis testing?
Classify: Data gathered from magazines
Which of the following is not included in the group?
Ten people took an employment exam, the following are their scores from a 50-item test
Which is incorrect? [3]
Classify: Data gathered from company files
This is the probability distribution that describes the time between events.
If the probability that x ≥ 10 is 65% and the probability that x=10 is 20%, what is the probability that x≠10?
If the distribution has a kurtosis value which is equal to zero. The distribution is said to be
In regression, the equation that describes how the response variable Yes is related to the explanatory variable (x) is:
Identify a business-related activity which involves experimental method of data collection
If both the series move in the same direction and the variations are in a fixed proportion, correlation between them is said to be
A researcher was interested in whether an individual's interest in politics was influenced by their level of education and gender. Therefore, the dependent variable was "interest in politics", and the two independent variables were "gender" and "level of education". In particular, the researcher wanted to know whether there was an interaction between education level and gender. What statistical method can be best used?
16 BSBA students took a quiz in Business Statistics, five of them got a score of 5; five got a score of 10 ; five got a score of 15 and the other one was unknown. If the mean score of 16 students is 10, what is the modal score?
Identify the technique in which a researcher studies the social process as they happen in the field.
It is a theoretical concept whose objective is to be able to explain for some variables the reaction between the intervals of its values and their corresponding probabilities.
This exists to guide business decisions by providing insight about competitors, products and customers. this statement describes the use of statistics in the field of
This is prefered to be used when handling samples which are greater than or equal to 30.
Which statement is false
You are in a game and you will choose one briefcase out of five. The following amounts are inside the briefcases 1,000,000; 500,000; 100,000; 50,000, 20,000. You will be going home with the amount inside your chosen briefcase. What is the probability that you will go home with at least 50,000?
Regression modeling is a statistical framework for developing a mathematical equation that describes how
___________assigns a probability to each measurable subset of the possible outcomes of a random experiment, survey, or procedure of statistical inference.
This is a statistic expressing the amount of random sampling error in a survey's results
Identify the area where statistics is being described: Statistics is applied in performance appraisal of employees.
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