Question

Mark’s mean score in four bowling games was 205 pins.
(a) How many pins did he score altogether?
(b) After five games his mean score was 199 pins.
What did he score in the 5th game?

Use the following table to compute the mean and standard deviation.

Answer 1

a)

According to the question,

Now,

which is the total number of pin scored altogether.

b)

Now,

So,

which is what he scored in the 5th game.