2) Now read the following data into R. Use R for all statistical procedures. Sample Sample А В 0.7969 1.4731 1.2669 3.2137 1.5856 2.2486 0.4959 1.1156 0.5022 10.6207 0.5524 1.9835 10.3060 31.2243 0.6244 3.7984 1.9789 1.4710 1.6788 9.0351 (a) Make q-q plots of both samples. (b) Perform a t-test (Welch's test). (c) Perform a MWU test. (d) Which test gave you the better p-value now? Why?
2) Now read the following data into R. Use R for all statistical procedures. Sample Sample А В 0.7969 1.4731 1.2669 3.2137 1.5856 2.2486 0.4959 1.1156 0.5022 10.6207 0.5524 1.9835 10.3060 31.2243 0.6244 3.7984 1.9789 1.4710 1.6788 9.0351 (a) Make q-q plots of both samples. (b) Perform a t-test (Welch's test). (c) Perform a MWU test. (d) Which test gave you the better p-value now? Why?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 1GP
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Transcribed Image Text:2) Now read the following data into R. Use R for all statistical procedures.
Sample
B
Sample
A
0.7969
1.4731
1.2669
3.2137
1.5856
2.2486
0.4959
1.1156
0.5022
10.6207
0.5524
1.9835
10.3060
31.2243
0.6244
3.7984
1.9789
1.4710
1.6788
9.0351
(a) Make q-q plots of both samples.
(b) Perform a t-test (Welch's test).
(c) Perform a MWU test.
(d) Which test gave you the better p-value now? Why?
(e) What is a "better" p-value? Why?
(f) This is two sided - why?
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