The closing share price for G.E.stock over the past seven days is shown below.Compute the variance for the data.Treat the data as a population. 112, 115, 111, 116, 116, 116, 112
A)3.671
B)4.589
C)3.423
D)4.286
E)5.112

Question

Quizplus · Accepted Answer

To calculate the variance, first find the mean of the data: (112 + 115 + 111 + 116 + 116 + 116 + 112) / 7 = 114. Next, find the squared differences from the mean: (112-114)², (115-114)², (111-114)², (116-114)², (116-114)², (116-114)², (112-114)². These are 4, 1, 9, 4, 4, 4, 4. The sum of these squared differences is 30. Divide by the number of data points (7) to get the variance: 30/7 = 4.286.

The Closing Share Price for G