Steps for q3 q4

1. Steps for Question no. 3 and 4.
3. Find the mean, mode, and median of the example data. The data represent the population of licensed
nuclear reactors in the United States for a recent 15-year period.
104 104 104 104 104
107 109 109 109 110
109 111 112 111 109
On an excel worksheet enter the numbers in cells.
First Method:
Compute the mean of the data. Key in =AVERAGE(A2:A16) in a blank cell
Compute the mode of the data. Key in =MODE(A2:A16) in a blank cell
Compute the median of the data. Key in =MEDIAN(A2:A16) in a blank cell
Second Method
Select the Formulas tab from the toolbar and select the Insert Function Icon.
Select the Statistical category for statistical functions.
Scroll to find the appropriate function (AVERAGE/MODE.SNGL/MEDIAN);
 Number 1: Select all data in cell A
 Click [OK].
4. Find the variance, standard deviation, and range of the data. The data represent the amount (in millions of
dollars) of European auto sales for a sample of 6 years.
11.2 11.9 12.0 12.8 13.4 14.3
On an Excel worksheet enter the data in cells.
First Method:
Find the sample variance. Enter =VAR(A2:A7).
Find the sample standard deviation. Enter =STDEV(A2:A7).
Find the range, compute the difference between the maximum and the minimum values. Enter
=MAX(A2:A7) - MIN(A2:A7).
Second Method
Select the Formulas tab from the toolbar and select the Insert Function Icon.
Select the Statistical category for statistical functions.
Scroll to find the appropriate function (VAR.S/STDEV.S/MAX-MIN);
 Number 1: Select all data in cell A
 Click [OK].

2. Additional Question
5. To obtain a boxplot and stem and leaf plot:
1. Enter the data values 33, 38, 43, 30, 29, 40, 51, 27, 42, 23, 31 into column A of a new Excel worksheet.
2. Select the Add-Ins tab, then MegaStat from the toolbar.
3. Select Descriptive Statistics from the MegaStat menu.
4. Enter the cell range A1:A11 in the Input range.
5. Check both Boxplot and Stem and Leaf Plot. Note: You may leave the other output options unchecked
for this example. Click [OK].