Question

please answer my question ​

Answer 1

Step-by-step explanation:

0.5666666....... the answer

Answer 2

Answer:

1. mean=fixi/fi

Step-by-step explanation:

class frequency xi fixi

1_3 9 2 18

3_5 22 4 88

5_7 27 6 152

7_9 17 8 136

73 394

fixi/fi=73/394

=5.3972