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Averages and Range - Level 5

Test your understanding of averages with this self marking quiz about mean, median and range.

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This is level 5; Mean, median, mode and range from a frequency table. You can earn a trophy if you get at least 9 questions correct. 

Give the answers to questions marked with an asterisk (*) to three significant figures.

1.
Shoe SizeFrequencyWorking
64
76
85
92
Shoes

This table shows the number of pairs of shoes of various sizes in the stock room of a shoe shop.

Find the the modal shoe size: CorrectWrong

Find the range of shoe sizes. CorrectWrong

What is the mean shoe size*? CorrectWrong

What is the median shoe size? CorrectWrong

2.
Number of EggsFrequencyWorking
156
164
176
189
193
202
Hen

The Harrow Hens were in a good egg-laying mood. The table shows the number of eggs laid in each of the Harrow hen houses.

Find the modal number of eggs in a hen house. CorrectWrong

Find the range of the number of eggs in a hen house. CorrectWrong

What is the mean of the number of eggs in a hen house*? CorrectWrong

What is the median of the number of eggs in a hen house? CorrectWrong

3.
Number of PassengersFrequencyWorking
247
2510
264
274
287
293
303
316
Bus

Inspector Blakey recorded the number of passengers on each bus that passed a particular bus stop. The data is shown in the table.

What is the mean number of passengers per bus*? CorrectWrong

If one of the buses that passed the bus stop was selected at random, what is the most likely number of passengers to be on that bus? CorrectWrong

How many buses had more than the median number of passengers? CorrectWrong

The next bus to pass the bus stop was almost full. The number of passengers was recorded and Blakey noticed that the range of the data was now 10. How many passengers were on this last bus? CorrectWrong

Check

This is Averages and Range - Level 5. You can also try:
Level 1 Level 2 Level 3 Level 4 Level 6 Level 7

Instructions

Try your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help.

When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file.

Why am I learning this?

Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician?

Comment recorded on the 19 October 'Starter of the Day' page by E Pollard, Huddersfield:

"I used this with my bottom set in year 9. To engage them I used their name and favorite football team (or pop group) instead of the school name. For homework, I asked each student to find a definition for the key words they had been given (once they had fun trying to guess the answer) and they presented their findings to the rest of the class the following day. They felt really special because the key words came from their own personal information."

Comment recorded on the 12 July 'Starter of the Day' page by Miss J Key, Farlingaye High School, Suffolk:

"Thanks very much for this one. We developed it into a whole lesson and I borrowed some hats from the drama department to add to the fun!"

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Digital Darts

An online darts game for one or two players requiring skill, strategy and mental arithmetic. It provides an enjoyable way to practise adding and subtracting two and three digit numbers.

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When planning to use technology in your lesson always have a plan B!

Isabella,

Wednesday, April 26, 2017

"The formula for finding the median is a on N items is (N+1)/2. Why is there a 'plus one' in that formula?

[Transum: Good question Isabella. The answer is here.]"

Gabriel Simamora, Harlaw Academy (Scotland)

Friday, February 19, 2021

"How do you answer question 10 to level one?
Thanks.

[Transum: Clue, let the age of the youngest person in the queue be x.]"

Transum,

Saturday, October 2, 2021

"If the average of a, b, c and d are a, what is the average of b, c and d?"

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Description of Levels

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Level 1 - Mean from a list

Level 2 - Range and mode from a list

Level 3 - Median from a list

Level 4 - Mixed 'wordy' questions

Level 5 - Mean, median, mode and range from a frequency table

Level 6 - Mean, median, mode and range from a grouped frequency table

Level 7 - Mean, median, mode and range from a bar chart

Mixed Medians - Find the medians of sets of different types of numbers.

More Averages - A wide range of interactive activities, puzzles, lesson starters and videos about mode, median, mean and range.

Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

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Curriculum Reference

See the National Curriculum page for links to related online activities and resources.

Reminders

Mean

To find the mean of a set of values add them together then divide by the number of values.

Example: find the mean of 8,9,10: 8+9+10=27, 27÷3=9: The mean is 9

Median

To find the median of a set of values arrange them in order then choose the middle value. If their are two middle values select the answer that is half way between those values.

Example: find the median of 4,12,7,6: In order 4,6,7,12: (6+7)÷2: The median is 6.5

A formula for finding which is the middle value if there are N values is (N+1)/2. You can see why there is an 'add one' here.

Mode

The mode of a set of values is the value that occurs most times.

Example: find the mode of 2,4,4,1: The mode is 4.

Range

The range of a set of values is the smallest value subtracted from the largest.

Example: find the range of 2,4,4,1: 4-1=3: The range is 3.

More Averages activities.

Mean, median and mode song.

Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can double-click the 'Check' button to make it float at the bottom of your screen.

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Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.

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