Statistics Skills Worksheet

Mean, Median, Mode & Range

Name:

Date:

📊 Key Definitions

Mean — Add all values, then divide by how many there are.

Median — The middle value when data is arranged in order.

Mode — The value that appears most often.

Range — The difference between the highest and lowest values.

Question 1. A group of Year 7 students recorded how many books they read over the school holidays:

4, 7, 3, 7, 5, 9, 7, 2

Calculate each measure for this data set. Show your working.

Mean = _________ Median = _________ Mode = _________ Range = _________

Question 2. The temperatures (°C) recorded in Christchurch over one week were:

12, 15, 11, 18, 15, 20, 13

Calculate each measure for this data set. Show your working.

Mean = _________ Median = _________ Mode = _________ Range = _________

Question 3. Students in a class measured the length of their handspan in centimetres:

16, 14, 19, 14, 18, 21, 14, 16, 20, 18

Calculate each measure for this data set. Show your working.

Mean = _________ Median = _________ Mode = _________ Range = _________

Question 4. A dairy owner recorded the number of customers each day for a week:

34, 41, 29, 41, 38, 55, 29

(a) Calculate each measure for this data set. Show your working.

Mean = _________ Median = _________ Mode = _________ Range = _________

(b) On Saturday, 80 customers visited. Which measure would change the most — the mean or the median? Explain your thinking.