Statistics and Data Handling notes

17 notes by 15 users

This Statistics and Data Handling page gathers notes on averages, grouped data, lines of best fit and box plots. It offers school students material to practise interpreting data and teachers ready-made notes to share. There are over 10 notes, mostly at secondary level, with some for primary pupils. Choose a note to get started.

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GCSE Maths Notes: Averages There are three main types of average: mean -  The mean is what most people mean when they say 'average'. It is found by adding up all of the numbers you have to find the mean of, and dividing by the number of nu... Average rating 4.0 out of 5 (4 ratings) · Andrea Leyden
GCSE Maths Notes: Averages There are three main types of average: mean -  The mean is what most people mean when they say 'average'. It is found by adding up all of the numbers you have to find the mean of, and dividing by the number of nu... Jonathan"jono"Barker
Ch. 1 Summary - Note Key Words: Interval = the spread between the smallest and the largest numbers in a range of numbers Bar Graph = Uses bars to represent data. Best for showing data for each category Line Graph = Uses dot... Inioluwa Ogun
Box Plots A box and whisker plot is used to display information about the range, the median and the quartiles. It is usually drawn alongside a number line, as shown: Example The oldest person in Mathsminster is 90. Th... Georgia Freeman
Averages The Mean is a Type of Average An average is a number that summarises a lot of data. For example, the average national salary is worked out from the salaries of everyone in the country.The mean is one of several differ... Frankie Balvert
Mean from a grouped frequency table Here is an example of a grouped frequency table: You want to estimate the mean of this data.In order to do this, you need to have a value that you can use to find the mean. The most accurate way of doing this, as you ... Ellen Billingham
Stem and Leaf Diagrams Stem and leaf diagrams are used to put long lists of data in order easily.This can help with finding medians and quartiles, but doesn't help to find the mean or mode, as what order the data is in is irrelevant to them... Ellen Billingham
Lines of best fit Line of best fit = a line on a graph that is equally distributed between the points. Used to find trends. Least squares regression line (don't need to know this until sixth form) is better than a line of best fit. Lea... Ellen Billingham
Untitled solving linear equations:Example: A person can pay £15 for a membership to the science museum and then can go to the museum for just £1 per visit. For a member of the science museum, what is the total cost for 6 visit... gcse2013
Untitled MEAN; ADD UP ALL OF THE NUMBER AND DIVIDE BY HOW MUCH THEY ARE E'G 7, 8, 5, 4, 10, 3= 7+8+5+4+10+3= 37 WHICH IS THEN DIVIDED BY 6 BECAUSE THERE ARE 6 NUMBERS 37 DIVIDED BY 6 = 6R1 OR 6.1MEDIAN; IS THE MIDDLE VALUEMODE... aliya6206
Mean Mean- the average of a data setTo find the mean you add all numbers and then divide by the amount of numbers in the data set. Example: Find the mean of 6, 7, and 11.6 + 7 + 11 = 24Divide the sum by the amount of numbe... nlabasin0652
Untitled GraphingGraphing: Show data in an organized way (easy to read).Type: Bar graph, Line graph, Pie graph, and Pictograph.7 Qualities of a Graph: Title Label with Unit Numbering Scale Start at 0,0 Origin Key Color Extrapo... samanthahoff.x
Discrete and continous data Discrete Data:... The word discrete data  sounds quite scary but it just means gaps or alone like when you dis somebody. Discrete data is counted. Bar charts are discrete data Continuous Data:..The word continuou... ishi2001
Untitled mean:  add them all together and divide by how many numbers there are median: the middle value list least to greatest mode: the one that occurs the most range: subtract least number from the biggest number MarDee Ivy
Box+Whiskers plot 1. Draw a scale 2. Mark your median with a line on the scale 3. Do the same with UQ+LQ 4. Draw a box around line. 5. Then draw whiskers(line) from smallest to highest value yomum 21
Untitled Histograms are a bit like bar charts but the frequency is the area of a bar. New Page laurenkinsley190
Introduction to Univariate Data There are two types of Data, Qualitative and Quanitiative  Univariate: Means one type of data or one variable Bivariate: means two types of variables (related to data you want to compare Trinity Ferguson

More Statistics and Data Handling resources

All Statistics and Data Handling resources Quizzes 30 Mind maps 95 Flashcards 106

About statistics and data handling notes

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Using statistics and data handling notes

These notes offer explanations and examples on several ways to describe and display data. Start with Mean if you want a short explanation of how to calculate an average. For more on averages, look at GCSE Maths Notes: Averages.

To practise reading displays, try Stem and Leaf Diagrams or Box Plots. The first explains how ordered data can help you find medians and quartiles; the second shows how a plot displays the median, quartiles and range.

Move between resources

Read an example in a note, then cover the explanation and work through the steps yourself. Return to the note to check your method. For an estimate using grouped data, use Mean from a grouped frequency table. If you want to see ideas arranged visually, switch to a mind map on the unit page; for questions to practise, use a quiz there.

When you are ready, try a unit quiz alongside your notes.

Frequently asked questions

Which note should I start with?

Start with Mean if you want a brief explanation and an example of finding an average. GCSE Maths Notes: Averages covers the main types of average. If you are working on displaying data instead, Stem and Leaf Diagrams is a useful place to begin.

What topics do these notes cover?

The notes cover averages, stem and leaf diagrams, grouped frequency tables, box plots and lines of best fit. You can choose a note that matches the method you are studying, then use its explanation or example to review the steps involved.

Are the notes free to use?

Yes. Every resource listed here is free to open and study without an account. The notes were made by GoConqr users. A free account also lets you make your own notes, quizzes, mind maps and flashcards, and save quiz scores.