The maximum value of the data set in problem 3 above is 107. If the analyst makes one mistake only and record it as 10.7, then the mistake will change the mean and the median of the data set.

b. If the variance of a data set is zero, then all observations must also be zero.

c. The standard deviation of a data set cannot be negative

d. The variance of a data set is always positive.

e. The following graph have a negative correlation:

## Place this order or similar order and get an amazing discount. USE Discount code “GET20” for 20% discount