Question

How do you find range, mean, mode, median in a data table.

Answer 1

We illustrate the concepts using the data set below:

4, 11, 14, 16, 19, 1, 4, 5, 10, 13

Range

The range of a set of data is derived by using the formula:

Highest Value - Lowest Value

Range = 19-1 = 18

Mean

The mean is the average of the set of data.

`\begin{gathered} \text{Mean}=\frac{Sum\text{ of items}}{\text{Number of items}} \\ =(4+11+14+16+19+1+4+5+10+13)/(10) \\ =(97)/(10) \\ =9.7 \end{gathered}`

The mean is 9.7

Mode

The mode is the number that appears the most.

In the set of data, 4 appears twice (which is the highest). Therefore:

Mode = 4

Median

To find the median, first arrange the numbers in ascending order.

1, 4, 4, 5, 10,11, 13, 14, 16, 19

Next, we pick the number in the middle.

In this case, we have two numbers: 10 and 11

We find the average.

Median =(10+11)/2=10.5