Year 12 Advanced Check-in Test 10

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

• Ordinal
• Nominal
• Continuous
• Discrete

Match the following

• Mean

• Unusual or extreme value

• Median

• Average of a set of data

• Range

• Most frequent score

• Mode

• The middle score

• Outlier

• Highest -lowest score

Correctly label this boxplot

b

a

c

d

e

Median

Q1

Lowest

Q3

Highest

Both the range and interquartile range measure the __________ 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.