the total in the 20 games is 840 points
Step-by-step explanationThe mean is the mathematical average of a set of two or more numbers, it can be found by using the formula:
![mean=\frac{sum\text{ of all data points}}{number\text{ of items}}](https://img.qammunity.org/2023/formulas/mathematics/high-school/6df3o64tv94cvbgzguai000yge4ya3z6m2.png)
so
Step 1
a) let
![\begin{gathered} number\text{ of items=20 \lparen 20 games\rparen} \\ mean\text{ = 42 \lparen points\rparen} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/high-school/xd73xtd7po35fix4oq7e3qihegqtpqv00n.png)
b) now, replace and solve for( sum of all data points)
hence
![\begin{gathered} mean=\frac{sum\text{ of all data points}}{number\text{ of items}} \\ 42=\frac{sum\text{ of data points}}{20\text{ }} \\ Multiply\text{ both sides by 20} \\ 42*20=\frac{sum\text{ofdatapo}\imaginaryI\text{nts}}{20}*20 \\ 840=sum\text{ of data poinsts} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/high-school/rxz0a2u7hj7csa02wndahs4lq8qinz9qo9.png)
therefore, the total in the 20 games is 840 points
I hope this helps you