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Click on the letter of the correct answer. Which is not a measure of central tendency? Mode Maximum Mean Median
Click on the letter of the correct answer. Which of the following is resistant to extreme values? Mean Maximum Range Mode
Click on the letter of the correct answer. Which of the following does NOT indicate a positive association? r r =. 099 =. 009 b 1 =. 456 r 2 =. 81 r>0
Click on the letter of the correct answer. If the persons in a sample are chosen to meet the demographics of the population, the sample will be A quota sample A cluster sample A stratified sample A voluntary response sample
Click on the letter of the correct answer. If representation of all four classes in a high school sample is of importance, which sampling design is appropriate? SRS Quota sample Systematic sample Stratified random sample
Click on the letter of the correct answer. Random digit tables and random number generators follow which of the following distributions? uniform t normal binomial
Click on the letter of the correct answer. If 10 is added to every value of a data set, which of the following occurs? Mean increases by 10 Range increases by 10 Median remains the same Mean increases by 100
Click on the letter of the correct answer. If a data set is transformed using (x, y) (ln x, ln y), the resulting regression model will be A power model A quadratic model An exponential model A linear model
Click on the letter of the correct answer. Sending an innocent person to prison is which of the following? Confidence level Type II error Type I error Power
Click on the letter of the correct answer. If the expected value of successes in a binomial experiment of 100 trials is 55, the standard deviation of number of successes is 2. 23 4. 97 2. 49 24. 75
Click on the letter of the correct answer. Order the following from least to greatest: I. Q 3, II. Value at 70 th percentile, III. Value with a z-score of 1. I, III II, I, III, II, I III, I, II
Click on the letter of the correct answer. The primary reason for use of blocking when designing an experiment is to reduce variation bias the need for randomization confounding
Click on the letter of the correct answer. A random sample of size 10 taken from a population has sample variance of 0. Which of the following is true? I. 2 = 0. II. S. mean = s. median III. All 10 pts same. I only III only I and II II and III only
Click on the letter of the correct answer. Two events that do not contain any of the same simple events (outcomes) is called independent mutually exclusive empty conditional
Click on the letter of the correct answer. When people think that the long-run frequency of an event should apply even in the short-run is referred to as Gambler’s fallacy Law of averages Law of large numbers Law of small numbers
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