A company employs $12$ drivers Their mean monthly salary is $1950. A new driver is employed and the mean monthly salary falls by $\$8.$ Find the monthly salary of the new driver.

The following table shows the hourly rates of pay, in dollars, of a company's employees.

Is the mean a good average to use here? Give a reason for your answer.

The following table shows the hourly rates of pay, in dollars, of a company's employees.

Find the mean rate of pay for the majority of the employees.

A train makes a non-stop journey from one city to another and back again each day. Over a period of $30$ days, the mean number of passengers per journey is exactly $61.5.$ Exact one-way ticket prices paid by these passengers are given by percentage in the following table.

Calculate the total revenue from ticket sales, and explain why your answer is an approximation.

A train makes a non-stop journey from one city to another and back again each day. Over a period of $30$ days, the mean number of passengers per journey is exactly $61.5.$ Exact one-way ticket prices paid by these passengers are given by percentage in the following table.

The minimum and maximum possible revenues differ by $\$k.$ Find the value of $k.$

The heights, in centimetres, of $54$ children are represented in the following diagram.

The children are split into two equal-sized groups: a 'tall half' and a 'short half'.

Calculate an estimate of the difference between the mean heights of these two groups of children.

The following table summarises the number of tomatoes produced by the plants in the plots on a farm.

Calculate an estimate of the mean number of tomatoes produced by these plots.

The following table summarises the number of tomatoes produced by the plants in the plots on a farm.

The tomatoes are weighed accurately and their mean mass is found to be $156.50$ grams. At market they are sold for $\$3.20$ per kilogram and the total revenue is $\$50350.$ Find the actual mean number of tomatoes produced per plot.