Independent Samples Test - Statistics Project Example

Descriptive Statistics
Group Statistics
Movie Type N Mean Std. Deviation Std. Error Mean
Empathy score Group M & D 1.00 15 79.5333 8.76573 2.26330
2.00 15 61.8667 11.04450 2.85168

Independent Samples Test
Levene's Test for Equality of Variances t-test for Equality of Means

F Sig. t
Empathy score Group M & D Equal variances assumed 1.513 .229 4.853
Equal variances did not assume 4.853

Independent Samples Test
t-test for Equality of Means

df Sig. (2-tailed) Mean Difference
Empathy score Group M & D Equal variances assumed 28 .000 17.66667
Equal variances did not assume 26.627 .000 17.6666

Independent Samples Test
t-test for Equality of Means
95% Confidence Interval of the Difference
Std. Error Difference Lower Upper
Empathy score Group M & D Equal variances assumed 3.64069 10.20906 25.12428
Equal variances did not assume 3.64069 10.19170 25.14164

What I have learned from the test
I have learned from the t-test how to determine whether or not the means of two independent samples are statistically different. I have learned that when performing a t-test for independent samples using SPSS, the scores of the two groups are put together in one column as opposed to being put in separate columns. During analysis, a group variable is created to accommodate the two groups whose means are being analyzed.

Mean, Std. deviation, P-value, and t-value
The descriptive statistics for the group of students who watched the fictional movie are as follows:
Mean empathy score = 79.5333
Standard Deviation = 8.76573
The descriptive statistics for the group of students who watched the documentary are as follows:
Mean empathy score = 61.8667
Standard Deviation = 11.04450
t-value (degrees of freedom) = 15 + 15 -2 = 28
p-value = 0.000

What the results mean:
For this test, the hypotheses are as follows:
Null hypothesis (H0): There is no significant difference between the mean scores of the students who watched the movie and those who watched the documentary.
Alternative hypothesis (H1): There is no significant difference between the mean scores of the students who watched the movie and those who watched the documentary. Read More