This document provides guidance on calculating the mean, or average, of statistical data. It defines the mean as the most commonly used measure of the center of data, also called the arithmetic average. The document explains that to find the mean of an ungrouped data set, you add up all the numbers and divide by the total number of numbers. It includes examples of calculating the mean and activity cards with practice problems. The document emphasizes calculating the mean of ungrouped data sets.

1. Strategic Intervention Material
Mathematics VII
4th Quarter
Prepared by:
LYKA MAY S. BERLAN

2. GUIDE CARD
LEAST LEARNED COMPETENCY
• calculates the measures of central tendency
of ungrouped and grouped data.
M7SP-IVf-g-1
OBJECTIVES
 Define mean of a statistical data
 Calculate the mean of an ungrouped data

3. What is MEAN?
It is the most commonly used
measure of the center of data
It is also referred to as the “arithmetic
average”

4. How to find the MEAN of an
ungrouped data?
Add up all the
numbers and
then divide
by the
number of
numbers

5. EXAMPLE:
Find the mean of the following list of values:
13, 18, 13, 14, 13, 16, 14, 21, 13
SOLUTION:
mean= (13 + 18 + 13 + 14 + 13 + 16 + 14 + 21 + 13) ÷ 9
= 135 ÷ 9
= 15

6. ACTIVITY CARD #1
Given the set of data, find the mean of
Ungrouped data:
1. 1, 2,4,7
2. 78,75, 80, 77,76
3. 45,50,43,44,44,46,48,49
4. 10,10,101,101
5. 12,14,13,12,12,11

7. ACTIVITY CARD #2
• Find the average weight of the group of
Chimpanzees
Chimp 1 weighs 55 kg
Chimp 2 weighs 51 kg
Chimp 3 weighs 58 kg
Chimp 4 weighs 50 kg

8. • Gong Yoo took 7 math tests in one
marking period. What is the mean
test score?
89, 73, 84, 91, 87, 77, 94

9. ASSESSMENT CARD
SOLVE the following problems.
1. Find the mean driving speed for 6 different
cars on the same highway:
66mph, 57 mph, 71 mph, 54 mph,
69 mph, 58 mph
2. Cardo’s family drove through 4 provinces on their
summer vacation. Gasoline prices varied from each
province. What is the mean gasoline price?
P49.50, P47.80, P47.50, P48.75

10. 3. A marathon race was completed by 5
participant in the times given.
What is the mean race time for this
marathon?
2.7 hr, 8.3 hr, 3.5 hr, 5.1 hr, 4.9 hr
4. Find the mean swimming time rounded to
the nearest tenth:
2.6 min, 7.2 min, 3.5 min,
9.8 min, 2.5min

11. 5. Awra’s 3rd quarter grades are the
following:
83,79,91,79,87,80,85,83
What is her average grade?

12. ENRICHMENT CARD
• The ARITHMETIC MEAN of a
set of n numbers is the sum of
the n numbers divided by n.
the MEAN is commonly
referred to as an AVERAGE.

13. REFERENCE CARD
• http://www.mathgoodies.com/lessons/vol
8/mean.html
• https://www.mathsisfun.com/mean.html

14. ANSWER CARD
ACTIVITY CARD #1
1. 3.5
2. 81
3. 46.125
4. 55.5
5. 12.33…
ACTIVITY CARD #2
1. 53.5 kg
2. 86.43
ASSESSMENT
CARD
1. 62.5 mph
2. P48.39
3. 4.9 hr.
4. 5.1 min
5. 83.375

15. GOOD JOB