Homework SourseData Set What is the sample mean of the above grouped data R
Data Set:
What is the sample mean of the above grouped data?
Reminder: this is NOT listed data
| Data Value | Frequency |
|---|---|
| -2 | 3 |
| -1 | 2 |
| 0 | 2 |
| 1 | 5 |
| 2 | 3 |
Solution
This is a frequency distribution table
| Data value | Freq | x*f |
| -2 | 3 | -6 |
| -1 | 2 | -2 |
| 0 | 2 | 0 |
| 1 | 5 | 5 |
| 2 | 3 | 6 |
| sum | 15 | 3 |
| Mean | 0.2 |
