Data can answer questions — Computing, 7–10 years
Learn how computers collect, organise and display facts so that patterns and answers are easier to see.
Facts arranged for a question
Data is information collected so that we can find something out. It might be temperatures, favourite fruit or the number of steps walked each day. A computer can keep the data in a table and turn it into a chart, making a group of facts easier to compare.
Why collect data?
The problem is that memory and guesses can miss details, especially when there are many observations. People began recording measurements to compare places, times and choices instead of arguing from a single example. Computing helps with the large, repetitive job of counting and displaying data, but a question must come first.
Which fruit is most popular?
Eight pupils choose a fruit: apple, pear, apple, banana, apple, pear, banana, apple. We count each kind: apples 4, pears 2 and bananas 2. A bar chart with bars of heights 4, 2 and 2 answers the question clearly: apple is the most popular in this small group.
The tempting mistake
A reasonable mistake is to treat a chart as automatically true because it looks neat. But a chart can be misleading if its labels are wrong, its scale skips numbers, or the question was unfairly asked. Also, eight choices describe this group, not everyone in the country. Data needs careful collection and honest reading.
Where data is used
Data appears in bus timetables, sports results, shop stock and weather forecasts. A fitness app counts steps, while a school might compare how many books were borrowed each month. These examples are useful because the data is linked to a real question, not collected just to make a colourful chart.
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