The Total solution for NCERT class 6-12
xi
92
93
97
98
102
104
109
fi
3
2
6
Let us make the tableof the given data and append other columns after calculations.
Xi
fixi
Deviations from mean
(xi – x̅)
(xi – x̅)2
fi(xi – x̅)2
276
92 – 100 = -8
64
192
186
93 – 100 = -7
49
291
97 – 100 = -3
9
27
196
98 – 100 = -2
4
8
612
102 – 100 = 2
24
312
104 – 100 = 4
16
48
327
109 – 100 = 9
81
243
N = 22
2200
640