# Histograms Flashcards

1️⃣ Familiarise yourself with the flashcards:

• Look through all the flashcards to see what’s on both sides.
• Make sure you understand the information on each card. If something’s unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

• Look at the question or prompt on each card and try to remember the answer before flipping it over.
• Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

• Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
• Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It’s useful to remember specific examples to understand these concepts better.

## What is a histogram?

A histogram is a type of graph that looks like a bar chart but is used to show the frequency of data across intervals, representing the distribution of continuous data.

## How do histograms differ from bar charts?

Histograms show the frequency of data within intervals, have touching bars to highlight continuous data, and all bars have the same width.

Bar charts compare different groups of data with separate bars.

## What do the x-axis and y-axis represent in a histogram?

In a histogram, the x-axis represents intervals of the total data range, and the y-axis shows the frequency of occurrences within each interval.

## Why are the bars in a histogram touching?

The bars in a histogram are touching to highlight the continuous nature of the data.

## Give an example of when a histogram might be used.

A histogram might be used to analyse the varying heights of trees in an orchard, frequencies of earthquakes at each magnitude on the Richter Scale, or different test scores achieved by a year group in a subject.

## How do you interpret the height and width of bars in a histogram?

The height of each bar represents the frequency of scores within each interval, and the width of each bar represents the interval range of scores.

For example, if the tallest bar is between 50-59, it shows more students scored in this range than any other.