ONEWAY ANOVA & INDEPENDENT SAMPLE T TEST
An independent-samples t-test was conducted To determine if activity On Facebook differed by gender. Overall, the activity on Facebook for females (M= 6.41 SD = .955), is significantly higher than the activity on Facebook for males (M= 3.42, SD = 1.802), t (120.568) = 12.93, p < .001 (< .05).
A one-way analysis of variance (ANOVA) is Conducted to compare the difference in number of Facebook friends among three generations (Generation X, Y, and Z). The F-test is statistically significant, F (2, 149) = 34.406 p < .001. The dependent Variable differed across different groups.
Follow-up tests are conducted to evaluate pairwise differences among the means, with the use of Scheffe. The results demonstrate that number of Facebook friends For generation X (M= 2.11, SD =1.08) is significantly lower than that for generation Y (M= 3.95, SD = 1.23), p < .001. Also, number of Facebook friends For generation Z (M= 2.58, SD = 1.13) is significantly Lower than generation Y (M=3.95, SD = 1.23), p <.001. However, the comparison between generation X (M= 2.11, SD = 1.08) and generation Z (M= 2.58, SD = 1.13) is not significant, P =.111 > .05.
When you answer post-hoc questions, you Can write up all the pairwise comparisons as below:
X – Y = -1.84828 < 0, p < .001 (significant)
X – Z = -.47525 < 0, p = .111 > .05 (not significant)
Y – X = 1.84828 > 0, p < .001 (significant)
Y – Z = 1.37303 > 0, p < .001 (significant)
Z – X = .47525 > 0, p = .111 >.05 (not significant)
Z – Y = -1.37303 < 0, p < .001 (significant)
Pairwise comparison in purple is between Generation X and generation Y, showing that X is significantly lower than Y(or Y is significantly higher than X).
Pairwise comparison in green is between Generation Y and generation Z, showing that Z is significantly lower than Y (or Y is significantly higher than X).
Pairwise comparison in yellow is between Generation X and Y, showing the difference is not significant.