Year 8: Frequency Tables
Presentation
•
Mathematics
•
8th Grade
•
Practice Problem
•
Easy
Harry Holyland
Used 1+ times
FREE Resource
3 Slides • 3 Questions
1
Refresh from last lesson and learning how to calculate the median
2
Draw
Starter Question:
3
The example from the starter question is shown in the middle.
This tells us that the first two numbers where a score of 0. The numbers from 2 to 6 where a 1, and the numbers from 6 to 13 where a 2.
From this example we can see that the 12th number is a 2 and our median is a 2.
Using the Cumulative Frequency
Example from Starter Question:
23/2 = 11.5
Therefore, the 12th number in data is the median
How do we know what number is the 12th number? (Look at the Cumulative Frequency column)
Divide total Frequency by 2
4
Draw
Practice:
5
Poll
Do you understand how to calculate median?
Yes
Can you please explain again
No
6
2) Underneath each table you must calculate the
a) mean
b) range
c) mode
d) median
Refresh from last lesson and learning how to calculate the median
Show answer
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