Question

Paired Samples Statistics N Pair Mean SC2000 Points - 2004 92.8310 SC2001 Points - 2001 94.6034 29 29 Std. Deviation 4.3818 5.7142 Sid. Error Moan 8137 1.0611 Paired Samples Correlations N Correlation Sig. Par SC2000 Points - 2000 & SC2001 Points - 2001 1 29 .731 .000 Paired Samples Test Paired Differences 95% Confidence Interval of the Std. Error Difference Std. Deviation Lower Upper 3.9043 7250 -3.2575 2873 Moan Mean 1 dt Paif SO2000 Points - 2000- SC2001 Points - 2001 Sie.2.tailed .021 -1.7724 -2.445 28

Answer 1

Answer:

3.90

Explanation:

From given SPSS output for the paired t test, using the direct difference approach, the standard deviation of the differences (SD) is given as 3.9043, while the standard error of the mean difference is given as 0.7250. The value 4.38 and 5.71 represents the standard deviations of the independent samples.