Univariate Data

Hong Kong

Stage 4 - Stage 5

$5$5 numbers have a mean of $7$7. If $4$4 of the numbers are $10$10, $10$10, $8$8 and $7$7 and the last number is $x$`x`, solve for the value of $x$`x`.

Easy

1min

The mean of $4$4 scores is $21$21. If three of the scores are $17$17, $3$3 and $8$8, find the $4$4th score, $x$`x`.

Easy

2min

Han wants to try out as a batsman for a cricket team. In his last three matches, he scored $61$61, $75$75 and $66$66 runs. In his last match before trying out, he wants to lift his mean to $70.75$70.75. If $x$`x` is the number of runs he needs to score to achieve this, find $x$`x`.

Easy

2min

Consider the frequency distribution table :

Easy

5min

Sign up to access Practice Questions

Get full access to our content with a Mathspace account