On a recent test, students had the following scores: 85, 100, 92, 96, 87, 94, 75. For these scores, find: a) Mean b) Variance = sum of (Difference from the Mea
Mathematics
pinkpen85
Question
On a recent test, students had the following scores: 85, 100, 92, 96, 87, 94, 75. For these scores, find: a) Mean b) Variance = sum of (Difference from the Mean)^2 c) Standard Deviation = Square root of the variance
2 Answer

1. User Answers charlottekrist
a. aprox. 89.86
b. 25
c. 5 
2. User Answers jacquelinemilenge10
Answer:
Mean= 89.9
Stepbystep explanation:
B. n:7
C. sum of ( difference form the Mean) divided by(n): 629 = variance D. standard deviation= 69.1