This document discusses different measures of central tendency used to describe data, including the mean, median, and mode. The mean is the average value calculated by adding all values and dividing by the total number. The median is the middle value when data is arranged from lowest to highest. The mode is the most frequently occurring value. Examples are provided to illustrate how to calculate each measure of central tendency.

1. MEASURES OF
CENTRAL
TENDENCY
UNGROUPED DATA

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3. MEASURES OF CENTRAL TENDENCY
Measures of central tendency are a key way
to discuss and communicate with graphs. The
term central tendency refers to the middle, or
typical, the value of a set of data, which is
most commonly measured by using the three
m's: mean, median, and mode. The mean,
median, and mode are known as the measures
of central tendency.

4. MEAN
● The mean is commonly
referred to as the average of
all values.
● To compute for the mean, add
all the scores and divide the
sum by the number of scores.
It is the easiest “average” to
compute.

5. EXAMPLE 1

6. EXAMPLE 2

7. MEDIAN
● It is the midpoint in the data array.
● To find its value, data must be arranged in order, from
least to greatest or vice versa.
How do you get the median for an even number of
scores in a set of data?
You will just add the two middle numbers then
divide by 2.

8. EXAMPLE 1

9. EXAMPLE 2

10. MODE
● It is the value that occurs most often in the
data set.
● The number/ value/ observation in a data set
which appears the most number of times.
 One mode – unimodal
 Two modes- bimodal
 Three or more modes – trimodal or
multimodal

11. EXAMPLE 1

12. EXAMPLE 2

13. EXAMPLE 3

14. GROUP
ACTIVITY
Data Detective

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