Answer:
It will increase by 0.91180239
The corrrect standard deviation is 79.96874389
Explanation:
With the typo
u = (100 + 200 + 250 + 275 + 300)/ 5 = 225
1 100 - 225 = -125
2 200 - 225 = -25
3 250 - 225 = 25
4 275 - 225 = 50
5 300 - 225 = 75
s = √{(1/(N-1) x (-125)^2 + (-25)^2 + 25^2 + 50^2 + 75^2)}
s = √{1/4 x 25,000}
s = 79.0569415
With the correct value
u = (100 + 200 + 260 + 275 + 300)/ 5 = 227
1 100 - 227 = -127
2 200 - 227 = -27
3 260 - 227 = 33
4 275 - 227 = 48
5 300 - 227 = 73
s = √{(1/(N-1) x (-127)^2 + (-27)^2 + 33^2 + 48^2 + 73^2)}
s = √{1/4 x 25,580}
s = 79.96874389
Difference 0.91180239
