Single variable and bivariate statistics

[Guest]

I've tried muItiple ways of approaching the question and none worked. 've uploaded the question down below.

[Guest]

Do you see how the first three were calculated?

The first round, the batsman got 26 runs so that is an average of 26/1= 26 runs per round.
In the first two rounds the batsman got 26+ 38= 64 runs so that is an average of 64/2= 32 runs per round.
In the first three rounds the batsman got 64+ 5= 69 runs so that is an average of 69/3= 23 runs per round.\

Now to complete it-
In the first four rounds the batsman got 69+ 10= 79 runs so that is an average of 79/4= 19.75 runs per round.
In the first five rounds the batsman got 79+ 52= 131 runs so that is an average of 131/5= 26.2 runs per round.

Can you finish it?