Graph Skills Y7

What is discrete data?

• Numeric data with certain values

• Data are words

• Numeric data with any value within a range

What is categoric data?

• Numeric data with certain values

• Data are words

• Numeric data with any value within a range

What is continuous data?

• Numeric data with certain values

• Data are words

• Numeric data with any value within a range

An example of continuous data is...

• Height

• Colour

• Temperature

• Shoe size

• Time

An example of discrete data is...

• Height

• Colour

• Temperature

• Shoe size

• Time

An example of categoric data is...

• Height

• Colour

• Temperature

• Shoe size

• Time

What is wrong with this graph?

Answer explanation

A perfect graph should have:

1.First column of table along the horizontal axis

2.Second column of table along the vertical axis

3.Label both axis

4.Units for both variables

5.Label scale for both axes

6.Neat crosses to mark points

7.Points cover at least 2/3 of the graph

8.Line/curve of best fit

Sketch a graph for the following data.

Temperature Mass of product

0 5

10 10

20 15

30 20

40 25

Answer explanation

1.First column of table along the horizontal axis

2.Second column of table along the vertical axis

3.Label both axis

4.Units for both variables

5.Label scale for both axes

6.Neat crosses to mark points

7.Points cover at least 2/3 of the graph

8.Line/curve of best fit

True or false: The line should go from dot to dot.

• True

• False

True or false: Lines of best fit have to be straight lines.

• True

• False