Question 29 of 50 : Select the best answer for the question. 29. What's a statistic with a sampling distribution mean equal to the population parameter being estimated? 0 A. Unbiased estimate 0 B. Minimum-variance unbiased estimator O C. Sampling distribution of a statistic O D. Central limit theorem Question 39 of 50 : Select the best answer for the question. 39. What measure is used to divide a data set into four parts, with each part containing approximately 25% of the data? 0 A. Range 0 B. Quartile O C. Median O D. Percentile Question 49 of 50 : Select the best answer for the question. 49. What are the experimental units on household income? 0 A. Taxes O B. Households O C. Working adults O D. Income