Year 12 Advanced Check-in Test 10

​ ​ (a)   data is categorical data that can be ordered.

• Ordinal
• Nominal
• Continuous
• Discrete

Match the following

• Median

• Highest -lowest score

• Range

• Average of a set of data

• Outlier

• The middle score

• Mean

• Unusual or extreme value

• Mode

• Most frequent score

Correctly label this boxplot

b

a

c

d

e

Lowest

Q1

Q3

Highest

Median

Both the range and interquartile range measure the (a)   of data.

Describe the shape and correlation for this scatterplot graph.

Answer explanation

The graph shown can be described as a moderately positively linear graph

​ (a)   has a positive correlation.

​ (b)   has a negative correlation.

​ (c)   has no correlation.

​ (a)   is using a model to predict values WITHIN the range.

​ (b)   is using a model to predict values OUTSIDE the range.

• Interpolation
• Extrapolation

Attempt to draw a line of best fit for this data.

Find the equation of the line of best fit.

Using the data provided find the correlation coefficient.