Question

Which answers I should have to answer

Answer 1

Given:

The table of point scored in 5 games.

After game 6, the mean number of points scored per game is 9.

To find:

The points scored by Maya in game 6.

Solution:

Let x be the points scored by Maya in game 6. Then sum of scores in all 6 games is:

$Sum=8+12+10+6+14+x$

$Sum=50+x$

We know that, the formula for mean is:

$\text{Mean}=\dfrac{\text{Sum of all observations}}{\text{Total number of observations}}$

So, the mean number of points scored per game is:

$\text{Mean}=\dfrac{50+x}{6}$

It is given that the mean number of points scored per game is 9.

$\dfrac{50+x}{6}=9$

$50+x=9\times 6$

$x=54-50$

$x=4$

Therefore, the correct option is A.