What this topic covers
Statistics has 4 subtopics:
- Sampling and Statistical Enquiry
- Charts, Diagrams and Distributions
- Averages and Spread
- Scatter Graphs and Correlation
IGCSE Edexcel Higher Maths · Topic 11 of 12
Choose a subtopic. Statistics covers Sampling and Statistical Enquiry, Charts, Diagrams and Distributions, Averages and Spread, and Scatter Graphs and Correlation in IGCSE Edexcel Higher Maths. 11 lessons in 4 subtopics.
Revise Statistics for IGCSE Edexcel Higher Maths, including Sampling and Statistical Enquiry, Charts, Diagrams and Distributions, and Averages and Spread.
11
Lessons
4
Subtopics
Statistics has 4 subtopics:
11 lessons, grouped by subtopic.
Go back to the full IGCSE Edexcel Higher Maths topic list, or practise this topic with past-paper questions.
Statistics covers Sampling and Statistical Enquiry, Charts, Diagrams and Distributions, Averages and Spread, and Scatter Graphs and Correlation in IGCSE Edexcel Higher Maths. 11 lessons in 4 subtopics.
The mode is the value that appears most often in a data set. The Measures of Central Tendency and Spread notes cover this in full.
The mean is calculated by adding all the values together and dividing by how many values there are. The Measures of Central Tendency and Spread notes cover this in full.
Frequency density = frequency ÷ class width, and it goes on the vertical axis of a histogram with unequal class widths. The Histograms and Cumulative Frequency Curves notes cover this in full.
The interquartile range (IQR) = Q3 - Q1, and it measures the spread of the middle 50% of the data. The Box Plots and Quartiles notes cover this in full.
The range is the difference between the largest and smallest values in a data set, so range = largest value − smallest value. The Measures of Central Tendency and Spread notes cover this in full.
To find the mean from a frequency table, multiply each value by its frequency to make an fx column, add up the fx column, then divide by the total frequency. The Measures of Central Tendency and Spread notes cover this in full.
A census collects data from an entire population. The Populations, Samples and Sampling notes cover this in full.
The types of correlation on a scatter graph are positive, negative and no correlation. The Scatter Graphs and Correlation notes cover this in full.