Median from Frequency Tables Flashcards

GCSE Mathematics (Edexcel) 1MA1

Median

The middle value in a data set when the values are arranged in order.

1 / 10

Ready to master these flashcards?

Sign in to study with spaced repetition and track your progress.

Sign In to Track Progress

Terms in this set (10)

1

Median

The middle value in a data set when the values are arranged in order.

2

Frequency Table

A table that shows how often each value or group of values occurs in a data set.

3

Cumulative Frequency

A running total of the frequencies, used to find the position of the median.

4

How to find the median from a frequency table

1. Calculate the cumulative frequency. 2. Find the position of the median using (n+1)/2. 3. Identify the group containing the median.

5

Position of the median

The position of the median is found using the formula (n+1)/2, where n is the total frequency.

6

Cumulative frequency column

A column added to the frequency table to calculate the running total of frequencies.

7

Grouped frequency table

A frequency table where data is grouped into intervals or classes.

8

Median class

The group or interval in a grouped frequency table that contains the median value.

9

Why use cumulative frequency?

Cumulative frequency helps to determine the position of the median in a data set.

10

What to do if the data is ungrouped

If the data is ungrouped, arrange it in order and find the middle value directly.

Genie

Want to Learn More?

Get personalised lessons, quizzes, and instant feedback from your AI tutor.

Start Learning