Question

Calculate the variance of the following set of data. 3, 33, 303, 233, 3, 73, 83, 63

Answer 1

Answer:

12083.929

Step-by-step explanation:

First step: find the mean of the data.

mean = 3+33+303+233+3+73+83+63

8

= 794

8

= 99.25

Second step: Now we calculate each dog's difference from the Mean.

Example : 3–99.25=96.25

Answer: (-96.25)+(-66.25)+203.75+133.75+(-96.25)+(-26.25)+(-16.25)+(36.25)

Third step: To calculate the Variance, take each difference, square it, and then average the result.

s² = (-96.25)²+(-66.25)²+203.75²+133.75²+(-96.25)²+(-26.25)²+(-16.25)²+(36.25)²

8–1

= 9264.063+4389.063+41514.063+17889.063+9264.063+689.063+264.063+1314.063

7

= 84587.5

7

= 12083.929

Variance Formula:

Variance = s² =Σ(xi− x )²

n−1

Answer 2

Answer:

its 12084

Step-by-step explanation:

on my test