Combined mean of two groups (Total sum over total count)
jee-mainjee-advanced
Total sum over total count
What each symbol means
| Symbol | What it stands for |
|---|---|
| n_1 | Size group 1 |
| n_2 | Size group 2 |
| \bar{x}_1 | Mean group 1 |
| \bar{x}_2 | Mean group 2 |
When to use this
Two independent summaries combined.