1.The mean of a data set of 101 observations is 250 and the median is 90. A business analyst discovers that one of the data points has been incorrectly entered. The value entered is 1,000 but the actual value of the data is 100. The analyst corrects that data point. Which of the following is true regarding the corrected data set?

a.The mean and median will both decrease.

b.The mean will decrease but the median will remain unchanged.

c.The mean and the median will remain unchanged.

d.The median will decrease but the mean will remain unchanged.

2.Assume we collect some data: 16, 16, 1, 10, 14, 0, -1.

What is the mean of this data (correct to 1dp)?_______

3.Assume we collect some data: 8, 3, 6, 5, 4, 1, 6.

What is the standard deviation of this data (correct to 1dp)?________