u930973931_answers

What type of statistical analysis is used to examine the relationship between two or more variables? A. T-test B. ANOVA C. Regression analysis D. Chi-square test Answer: C In simple linear regression, what is the term used to describe the dependent variable? A. Predictor variable B. Response variable C. Independent variable D. Explanatory variable Answer: … Read more

1. Which measure of central tendency is also known as the arithmetic average? A. Mean B. Median C. Mode D. Range Answer: A 2. What is the mode of the following data set: 3, 5, 7, 7, 9, 11? A. 3 B. 7 C. 9 D. 11 Answer: B 3. What is the range of … Read more

1. What is the mean of the following data set: 2, 4, 6, 8, 10? A. 4 B. 5 C. 6 D. 7 Answer: C 2. What is the median of the following data set: 1, 3, 5, 7, 9? A. 3 B. 5 C. 7 D. 9 Answer: B 3. Which measure of central … Read more

1. What is the probability of rolling a 3 on a fair six-sided die? A. 1/6 B. 1/3 C. 1/2 D. 1/4 Answer: A 2. If two events A and B are mutually exclusive, what is P(A ∩ B)? A. P(A) + P(B) B. P(A) × P(B) C. 0 D. 1 Answer: C 3. What … Read more

1. Which of the following is the primary purpose of descriptive statistics? A. To predict future values B. To summarize and describe the main features of a data set C. To establish causal relationships D. To infer population parameters from sample data Answer: B 2. What is the mode in a data set? A. The … Read more

1. What is the primary purpose of regression analysis? A. To describe data B. To compare means between groups C. To predict the value of a dependent variable based on one or more independent variables D. To test for associations between categorical variables Answer: C 2. In a simple linear regression model, which variable is … Read more

1. What does a p-value of 0.03 indicate in hypothesis testing? A. There is a 3% chance of making a Type I error B. There is a 3% chance of making a Type II error C. There is a 3% chance of rejecting the null hypothesis incorrectly D. There is a 3% chance of accepting … Read more

1. Which of the following measures central tendency? a) Range b) Variance c) Mean d) Standard deviation Answer: c) Mean 2. The median of a data set is the: a) Most frequent value b) Middle value when data is ordered c) Average of all values d) Difference between the highest and lowest values Answer: b) … Read more

1. What is the probability of an event that is certain to happen? a) 0 b) 0.5 c) 1 d) None of the above Answer: c) 1 2. If two events are mutually exclusive, what is the probability that either one or the other occurs? a) Sum of their probabilities b) Product of their probabilities … Read more

1. What is the main purpose of descriptive statistics? a) To make inferences about a population b) To describe the main features of a dataset c) To determine cause and effect d) To test hypotheses Answer: b) To describe the main features of a dataset 2. Which measure of central tendency is most affected by … Read more