Statistics Example - HP 30b - Business Professional Calculator User Manual

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
Predictions, predict sales for month seven. What is the linear regression line? What is the sum of all
the values? See Table 12-2 and Table 12-3.
y
72 Statistical Operations
. Enter these into the Data menu. Using the Statistics menu for
y
Table 12-2 Statistics Example Months and Sales Values
Month
1
2
3
4
5
Sales Values
150
165
160
175
170