Question: A stratified random sample reduces error when ________________. Group of answer choices an equal number of cases is drawn from each stratum. the stratifying variable

A stratified random sample reduces error when ________________. Group of answer choices an equal number of cases is drawn from each stratum. the stratifying variable is related to the variable under study. the differences between strata are relatively small. the number of cases in each stratum of the sample is proportionate to the number of cases in the population

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

1. A POW in solitary confinement tosses a fair coin a large number of times. Assuming the tosses are independent, which of the following is true? Group of answer choices Once the number of flips is...

Answer the following True/False, Multiple Choice, Fill in blank as QUICKLY AS POSSIBLE*. Please let them be correct answers. No explanation needed. 1 When conducting a one-sample t test, if a sample...

1. A(n) ______ is a property of people or objects that can take two or more values. A. unit of analysis B. variable C. level of measurement D. theory 2. The variable the researcher wants to explain...

Summary of an Article 1 Each student is assigned a specified article and pages. Each student submits a typed written summary and analysis of the assigned article and pages by Nov. 5, 2013, at the...

In a disproportionate stratified sample, Group of answer choices a different proportion of cases is drawn from each stratum. the sample proportions equal the population proportions of each stratum. a...

Which of the following correlation coefficients would indicate a strong a positive relationship between two variables? Group of answer choices 0.00007 -0.9 0.88 -0.003 Flag question: Question 2...

Question 1 4pts If neighbors wanted to have a speed bump installed on one part of the road, which statistical method would be most effective. Group of answer choices Regression with speed as an...

13.( 1 pt) For each of the following situations, indicate whether ANOVA is appropriate; if not appropriate, the reason why not; and, if appropriate, the type of ANOVA that would be used (i.e.,...

uiz Note: It is recommended that you save your response as you complete each question. Question 1 (1 point) You and your colleague are designing a study to try to determine the ideal mean cost for a...

Balls numbered 1 through N are in an urn. Suppose that n, n N, of them are randomly selected without replacement. Let Y denote the largest number selected. (a) Find the probability mass function of...

A fluid sample is contained between two parallel plates separated by a distance of 2 mm. The area of the plates is 100 cm 2 . The bottom plate is stationary, and the top plate moves at a velocity of...

Interest expense should be ignored when estimating the operating cashflows from a project.

160 The trial balance of Pacilio Security Services, Incorporated as of January 1, Year 7, had the following normal balances: Cash $ 78,972 Petty Cash 180 Accounts Receivable 33,440 Supplies Prepaid...