Types of data and graphs Flashcards

1
Q

Describe what is meant by discrete data and state examples

A

- Numerical data that can only take
certain values
- e.g. age,shoe size, year group

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2
Q

Describe what is meant by continuous data and state examples

A

- Numerical data that can take any
value within a range
- e.g. Height, length of journey to school, time spent on
the PS4

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3
Q

Describe what is meant by categoric data and state examples

A

- Data that is organised into groups or categories
- Gender, favourite colour, brand of trainers, the primary school you went
to

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4
Q

What type of data are bar charts used to represent

A

Categoric data

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5
Q

What type of data are line graphs used to represent

A

Continuous

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6
Q

What type of data are scatter graphs used to represent

A

2x continuous data

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7
Q

What type of data are pie charts used to represent

A

Categoric data

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8
Q

What type of data are histograms used to represent

A

Grouped frequencies

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9
Q

What do scatter graphs show

A

Correlation (relationship) between two continuous variables

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10
Q

What can the line of best fit in a scatter graph be used for

A

To predict intermediate values

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11
Q

What do line graphs measure

A

Continuous dependent variable as discrete or continuous independent variable changes

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12
Q

What’s significant about the points being joined on a line graph

A

We cannot predict intermediate values as we did not measure the dependent variable

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13
Q

Describe properties of a curve of best fit

A
  • Smooth curve (not sketchy)
  • Goes through as many points as possible
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