Statistical Operations
72
Statistics Example
Sales for the last five months are represented by the pairs of values shown below, with the month
number as
x
, and the sales values as
y
. Enter these into the Data menu. Using the Statistics menu for
Predictions
, predict sales for month seven. What is the linear regression line? What is the sum of all
the
y
values? See Table 12-2 and Table 12-3.
Table 12-2 Statistics Example Months and Sales Values
Month
Sales Values
1
150
2
165
3
160
4
175
5
170