12 processing and analysing data

Which of the following is a type of graph used to construct and interpret data displays?

• Pie chart

• Scatterplot

• Venn diagram

• Flowchart

What are the measures of central tendency mentioned in the learning material?

• Mean and mode

• Median and range

• Mean and median

• Mode and range

What does Pearson’s correlation coefficient measure?

• The average of a data set

• The strength and direction of linear relationships

• The spread of a data set

• The frequency of data points

Which of the following is NOT a type of table used to interpret data displays?

• Summary table

• Frequency table

• Periodic table

• Histogram table

What is a scatter graph useful for?

• Displaying a large amount of data and establishing a relationship between two variables

• Showing a single data point

• Comparing two unrelated variables

• Displaying data in a pie chart format

What is an example of data that can be plotted on a scatterplot?

• Global temperature plotted against time

• Monthly rainfall in a single year

• Population of a city in a single year

• A single temperature reading

On a scatter graph, where is the independent variable plotted?

• Vertical (upright) axis

• Horizontal (sideways) axis

• Diagonal axis

• No specific axis

What does a line of best fit on a scatter graph represent?

• The exact values of data points

• The overall trend of the data

• The average of the data points

• The maximum value of the data

If the line of best fit slopes up to the right, what kind of trend does it indicate?

• Decreasing or negative trend

• Constant trend

• Increasing or positive trend

• No trend

What does it mean if the line of best fit slopes up to the left?

• Increasing or positive trend

• Decreasing or negative trend

• Constant trend

• No trend