In: Math
Quality of Marriage Quality of the Parent–Child Relationship
76 43
81 33
78 23
76 34
76 31
78 51
76 56
78 43
98 44
88 45
76 32
66 33
44 28
67 39
65 31
59 38
87 21
77 27
79 43
85 46
68 41
76 41
77 48
98 56
98 56
99 55
98 45
87 68
67 54
78 33
here we will use paired sample t test because the Quality of Marriage and Quality of the Parent–Child Relationship independent of each other from SPSS we have
Paired Samples Statistics
Mean N Std. Deviation Std.
Error Mean
Pair 1 marriage 78.5333
30 12.52785 2.28726
Relation 41.2667 30
11.16933 2.03923
Paired Samples Test
Paired Differences
Mean Std. Deviation Std. Error
Mean 95%CI of the Difference t
df Sig. (2-tailed)
Lower Upper
marriage - Relation 37.26667 12.62164 2.30439 32.55367 41.97966 16.172 29 .000
the 95 % confidence interval is (32.55367 ,41.97966 ) it tells us that we are 95 % sure / confident that the differnece of population mean of the variables give lies in this interval .