9

The result of throwing one dice 200 times is represented by the following table:

  1 2 3 4 5 6
fi a 32 35 33 b 35

Determine the value of a and b knowing that the average score is 3.6.


xi fi xi · fi
1 a a
2 32 64
3 35 125
4 33 132
5 b 5b
6 35 210
  135 + a + b 511 + a + 5b

Statistical Operations

Statistical Operations

a = 29 b = 36