variance and standard deviation for the following data 45 60 62 60 50 65 58 68 44 48
Answers
Answer:
Variance = 73.55
Standard deviation = 8.576
Step-by-step explanation:
We are the following data ;
X X -
45 45 - 56 = -11 121
60 60 - 56 = 4 16
62 62 - 56 = 6 36
60 60 - 56 = 4 16
50 50 - 56 = -6 36
65 65 - 56 = 9 81
58 58 - 56 = 2 4
68 68 - 56 = 12 144
44 44 - 56 = -12 144
48 48 - 56 = -8 64
Firstly, we will calculate the mean of above data;
Mean = = = = 56
Variance formula = = = 73.55
Standard deviation = = = 8.576
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