IGCSE Edexcel Higher Maths · Topic 12 of 12
Choose a subtopic. IGCSE Mathematics A Topic 6: Statistics and Probability. 23 lessons in 6 subtopics.
Revise Topic 6: Statistics and Probability for IGCSE Edexcel Higher Maths, including Statistical Enquiry and Sampling. 23 lessons across 6 subtopics.
23
Lessons
6
Subtopics
Topic 6: Statistics and Probability has 6 subtopics:
23 lessons, grouped by subtopic.
Go back to the full IGCSE Edexcel Higher Maths topic list, or practise this topic with past-paper questions.
IGCSE Mathematics A Topic 6: Statistics and Probability. 23 lessons in 6 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.
A sample space diagram is a two-way grid listing every outcome of two combined events, with one event across the top and the other down the side. The Systematic Enumeration Using Tables, Grids and Venn Diagrams 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.
At GCSE level, the law of large numbers means that as the number of trials increases, the relative frequency gets closer to the theoretical probability. The Experimental Probability, Relative Frequency and Sample Size notes cover this in full.