This document defines and provides examples of key statistical vocabulary: - Mean is the total divided by how many values there are - Median is the middle number when values are ordered from smallest to largest - Mode is the most common value - Range is the difference between the largest and smallest values Examples are given to demonstrate calculating the mean, median, mode, and range of a dataset of 5 children's heights.

1. KEY VOCABULARY
Mean
- The total divided by how many
Median
- The middle number in size order
Mode
- The most common one.
Range
- How far apart your values are.

2. EXAMPLES APPLYING THE CONCEPTS
LEARNT IN THE VOCABULARY
MEAN - The total divided by how many
5 children’s heights are 132cm, 142cm, 118cm,
120cm, and 118cm
What is the MEAN?
MEAN
Mean = 132 + 142 + 118 + 120 + 118 =
5
Mean =
630
5
= 126

3. Median
- The middle number in size order
5 children’s heights are
132cm, 141cm, 118cm, 120cm, and 118cm
DON´T FORGET TO ORDER THE
INFORMATION
FROM
SMALLEST TO BIGGEST
What is the MEDIAN?
MEDIAN
118cm, 118cm, 120cm, 132cm, and 141cm
120cm

4. Mode
- The most common one.
5 children’s heights are
132cm, 141cm, 118cm, 120cm, and 118cm
What is the MODE?
MODE
132cm, 141cm, 118cm, 120cm, and 118cm
118cm
118
So, the most common number (MODE) or the
value that is more times repeated here is 118.

5. Range
- How far apart your values are
5 children’s heights are
132cm, 141cm, 118cm, 120cm, and 118cm
What is the RANGE?
Biggest = 141cm
Smallest = 118cm
Here you can do a normal substraction to get the
RANGE...
RANGE
Biggest- Smallest so, 141 and 118 are 23 apart.
141 and 118 are 23 apart.

6. Range
- How far apart your values are
5 children’s heights are
132cm, 141cm, 118cm, 120cm, and 118cm
What is the RANGE?
Biggest = 141cm
Smallest = 118cm
Here you can do a normal substraction to get the
RANGE...
RANGE
Biggest- Smallest so, 141 and 118 are 23 apart.
141 and 118 are 23 apart.