Let's assume asked all the children in your class their favourite color.these were there responses for the following colours blue, red, yellow, green. 1, 3, 3, 3, 5, 6, 6, 9, 9, 9

The given data points are: 1, 3, 3, 3, 5, 6, 6, 9, 9, 9.
There are 10 data points (n = 10).

The mean is the sum of all values divided by the number of values.
Sum = 1 + 3 + 3 + 3 + 5 + 6 + 6 + 9 + 9 + 9 = 54
Mean = (Sum of values) / (Number of values)
Mean = 54 / 10
Mean = 5.4

The median is the middle value when the data is ordered. Since there are 10 data points (an even number), the median is the average of the two middle values (the 5th and 6th values).
Ordered data: 1, 3, 3, 3, 5, 6, 6, 9, 9, 9
The 5th value is 5.
The 6th value is 6.
Median = (5 + 6) / 2
Median = 11 / 2
Median = 5.5

The mode is the value that appears most frequently in the data set.

• 1 appears once.
• 3 appears three times.
• 5 appears once.
• 6 appears twice.
• 9 appears three times. Both 3 and 9 appear three times, which is the highest frequency. Mode = 3 and 9 (This is a bimodal dataset).

The range is the difference between the maximum and minimum values.
Maximum value = 9
Minimum value = 1
Range = Maximum value - Minimum value
Range = 9 - 1
Range = 8