Page 131 - Quantitative Data Analysis
P. 131
Quantitative Data Analysis
Simply Explained Using SPSS
Unit Exercises
1. Given the following data of age and hours of sleep for five
individuals.
Age (X) Hours of Sleep (Y)
37 8
44 6.5
46 7
25 8
12 9
1. Descriptive Statistics: Determine the mean and standard
deviation for Age (X) and Hours of Sleep (Y).
2. Draw a scatter plot; put the X variable (independent) on the
X-axis and the Y variable (dependent) on the Y-axis.
3. Calculate the covariance (s xy) between Age (X) and Hours of
Sleep (Y).
4. Calculate the Pearson r correlation.
5. Interpret the form, direction, and strength of the
correlation.
6. Following is the set of students’ entry test score and their
first semester GPA.
Test score GPA
21 3.1
23 3.3
27 3.2
22 2.8
31 3.4
16 2.9
The Theory and Applications of Statistical Inferences 115
