PROBLEM 2 A student in PSYC 227 class collects data for a class project. She asks 10 classmates to shoot 10 free throws on a standard basketball court and records the number of shots made by each participant (X). She also has these same participants run an obstacle course and records their time (Y). She wants to statistically evaluate if variables X and Y are related. She computes the sum of squared deviations for X, the sum of squared deviations for Y, and the sum of cross products between X and Y. SUM (x-x)² 3.24 (Y-Y)2 15.21 (X-X) (Y-Y) -7.02 7.84 0.81 -2.52 1.44 16.81 -4.92 10.24 4.41 -6.72 0.04 9.61 -0.62 0.64 8.41 -2.32 3.24 15.21 -7.02 1.44 0.01 -0.12 0.04 4.41 -0.42 0.64 3.61 -1.52 28.8 78.5 - 33.2 Which of the following statements summarizes the results of the statistical analysis best? Increase in X is associated with an increase in Y. There is a strong association between X and Y. There is a weak association between X and Y. There is no association between X and Y. Click Save and Submit to save and submit. Click Save All Answers to save all answers. 7,426 213 280 2 JUN 14 tv ZA Save All Answers S # 3 $ 4 % 1 * ( 5 6 7 8 9 0 E R T Y U 0 W
PROBLEM 2 A student in PSYC 227 class collects data for a class project. She asks 10 classmates to shoot 10 free throws on a standard basketball court and records the number of shots made by each participant (X). She also has these same participants run an obstacle course and records their time (Y). She wants to statistically evaluate if variables X and Y are related. She computes the sum of squared deviations for X, the sum of squared deviations for Y, and the sum of cross products between X and Y. SUM (x-x)² 3.24 (Y-Y)2 15.21 (X-X) (Y-Y) -7.02 7.84 0.81 -2.52 1.44 16.81 -4.92 10.24 4.41 -6.72 0.04 9.61 -0.62 0.64 8.41 -2.32 3.24 15.21 -7.02 1.44 0.01 -0.12 0.04 4.41 -0.42 0.64 3.61 -1.52 28.8 78.5 - 33.2 Which of the following statements summarizes the results of the statistical analysis best? Increase in X is associated with an increase in Y. There is a strong association between X and Y. There is a weak association between X and Y. There is no association between X and Y. Click Save and Submit to save and submit. Click Save All Answers to save all answers. 7,426 213 280 2 JUN 14 tv ZA Save All Answers S # 3 $ 4 % 1 * ( 5 6 7 8 9 0 E R T Y U 0 W
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:PROBLEM 2
A student in PSYC 227 class collects data for a class project. She asks 10 classmates to shoot 10 free throws on a
standard basketball court and records the number of shots made by each participant (X). She also has these same
participants run an obstacle course and records their time (Y). She wants to statistically evaluate if variables X and
Y are related. She computes the sum of squared deviations for X, the sum of squared deviations for Y, and the
sum of cross products between X and Y.
SUM
(x-x)²
3.24
(Y-Y)2
15.21
(X-X) (Y-Y)
-7.02
7.84
0.81
-2.52
1.44
16.81
-4.92
10.24
4.41
-6.72
0.04
9.61
-0.62
0.64
8.41
-2.32
3.24
15.21
-7.02
1.44
0.01
-0.12
0.04
4.41
-0.42
0.64
3.61
-1.52
28.8
78.5
- 33.2
Which of the following statements summarizes the results of the statistical analysis best?
Increase in X is associated with an increase in Y.
There is a strong association between X and Y.
There is a weak association between X and Y.
There is no association between X and Y.
Click Save and Submit to save and submit. Click Save All Answers to save all answers.
7,426
213
280
2
JUN
14
tv
ZA
Save All Answers
S
#
3
$
4
%
1
*
(
5
6
7
8
9
0
E
R
T
Y
U
0
W
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