In order to make sample statistics more biased we use the degrees of freedom (n-1) in calculating measures of variability. Group of answer choices True False

You answered this question: What is the Sample Variance for the following numbers:52, 62, 52, 45, 41

Using a pooled sample estimator, o , assumes the two populations have O A. different means. O B. the same mean. O C. the same variance. O D. different variances.

How many sources of between-group variation are measured in a two-way between-subjects ANOVA? Group of answer choices a. 4 b. 2 c. 3 d. 5

An analysis of variance produces SSbetween = 75 and MSbetween = 15. In this analysis, how many treatment conditions are being compared?​ Select one: a. ​ 3 b. ​ 4 c. ​ 5 d. ​ 6

Use the information provided below for the SINGERS questions that follow. Our goal will be to see if there is any association between type of singer and height. ONE-WAY ANOVA Data from DASL: http://lib.stat.cmu.edu/DASL/Datafiles/Singers.html This exercises deals with the heights (in inches) of singers. The graph and Excel Anova output are given below. 80 75 70 65 60 55 • Soprano • Alto • Tenor • Bass Anova: Single Factor SUMMARY Groups Count Sum Average Variance Soprano 36 2313 64.25 3.5071 Alto 35 2271 64.885714 7.8101 Tenor 20 1383 69.15 10.3447 Bass 39 2758 70.717949 5.5762 ANOVA Source of Variation SS df MS F P-value F crit Between Groups 1058.5289 3 352.84298 55.800134 5.1E-23 2.67652 Within Groups 796.74029 126 6.3233357 Total 1855.2692 129 © 2020 Radha Bose, Florida State University Department of Statistics Heights (inches)