their IQ score. STATISTICS IQ SCORE GRADE Rank Rank STUDENT Y Y D D 1 65 85 50 74 3 55 76 65 90 70 85 6. 65 87 70 94 55 85 70 90 10 50 81 11 55 91 12 75 76 13 80 74
their IQ score. STATISTICS IQ SCORE GRADE Rank Rank STUDENT Y Y D D 1 65 85 50 74 3 55 76 65 90 70 85 6. 65 87 70 94 55 85 70 90 10 50 81 11 55 91 12 75 76 13 80 74
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Question
Transcribed Image Text:2. The following data represent the Statistics grades for a random sample of 12 freshman-nursing students of OLFU along with
their IQ score.
STATISTICS
IQ SCORE
GRADE
Rank
Rank
STUDENT
Y
Y
D
D2
1
65
85
50
74
3
55
76
4
65
90
70
85
6.
65
87
7
70
94
8.
55
85
9
70
90
10
50
81
11
55
91
12
75
76
13
80
74
14
65
80
15
70
70
a) Compute and interpret the sample correlation coefficient.
Solution:
Value of r:
Interpretation of r:
b) Test the null hypothesis that there is no significant relationship between 1Q score and the Statistics grade at 0.05 level
of significance.
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