Unit 1/2 Revision

1. Calculate the values of x and y.

Give your answer x =..., y=...

 

For the sample data set

3, 2, 2, 5, 6, 3, 3, 8, 2, 9, 9, 8, 6, 2, 7

use your calculator to determine which of the following mean and standard deviation respectively would be closest too..

• 5 and 6

• 5 and 2.6

• 2.6 and 5

• 5 and 2.7

For the following stem plot, calculate the median and the interquartile range respectively. Q6 Univariate data

• 61 and 18

• 61 and 18.5

• 63.5 and 18

• 63 and 18

Determine the expression for x in the triangle shown.

Solve the following matrix equation for n.

• n = 5

• n = -0.67

• n = 2

• n = 6

Describe the distribution of the Stem and Leaf Plot.

• Positively Skewed

• Negatively skewed

• Symmetrical

The locations of Jo’s, Nelson’s and Sammy’s homes are shown in the diagram. Jo’s home is due north of Nelson’s home. The bearings of Sammy's home from Jo’s and Nelson’s e are respectively.

• 030°T and 090°T

• 060°T and 090°T

• 240°T and 270°T

• 240°T and 180°T

The AFL premiers from 2007 to 2014 are shown in the following table. Identify the five-number summary for the data.

Calculate the value of x.