Quiz 1 - Averages and Measure of Spread

The 100 students estimate the total area of the windows in the classroom. The result are shown in the table.

Estimate mean of the data.

• 100

• 106

• 120

• 140

A teacher has mathematics quiz and the result shown in the table.

In which class the mode lies on?

• 51 - 60

• 71 - 80

• 81 - 90

• 91 - 100

Look at the picture.

1) Which athlete has the longest mean jump?

2) Refers to the calculation of the range, which athlete is the most consistent triple jumper?

• Idowu has the longest mean jump and Idowu is the most consistent.

• Evora has the longest mean jump and Evora is the most consistent.

• Idowu has the longest mean jump and Evora is the most consistent.

• Evora has the longest mean jump and Idowu is the most consistent.

The table shows the number of goals scored by a football team in 25 match.

What is the upper quartile (Q3) of this data?

• 2

• 2.5

• 3

• 3.5

Given a frequency table :

If you swap the frequency of score 120 with the frequency of score 140, what will change?

• The mode

• The median

• The range

• The mean

A store manager records the sales of sizes for T-shirts, finding that size 14 is the most popular but the median size is 12. The smallest size is 10 and the range in sizes is 6.

Choose which table of the Store that could represent this statistical information.

• 
• 
• 
• 

Based on the data in the table.

What is the Range?

• 13

• 21

• 29

• 4

What is the interquartile range?

• 4
• 6
• 2
• 8

Which car club has the higher median?

• Cruisers
• Car Hops

• 54

• 56

• 54.5

• 56.5