Question

The table below shows the number of children in families at a church in Milwaukee. Number of Children Frequency 5 7 2 10 2 The standard deviation for children in a family is: (Round to two decimal places.)

Answer 1

Occurance(X)	Frequency(f)	Freq*X	(X-mean)	(X-mean)2	f*(X-mean)2
0	5	0	-1.906	3.634	18.169
1	7	7	-0.906	0.821	5.749
2	8	16	0.094	0.009	0.07
3	10	30	1.094	1.196	11.963
4	2	8	2.094	4.384	8.768
5	0	0	3.094	9.571	0
6	0	0	4.094	16.759	0
Total ->	32	61

Mean = sum (freq*X) / n

Mean = 1.91

S = sqrt [ sum( f*(X-mean)^2) / n - 1 ] = 44.719 / 31

Standard Deviation = 1.20