R mean by group
Similar codes
- 0 vote100 views1 answer
- 1 vote113 views1 answer
- 0 vote113 views1 answer
- 1 vote116 views1 answer
- 2 votes143 views1 answer
- 0 vote110 views1 answer
- 0 vote115 views1 answer
- 0 vote151 views1 answer
- 0 vote110 views1 answer
- 0 vote133 views1 answer