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Math

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  • Learn Mean, Median and Mode – Tutorial and Practice Questions

Learn Mean, Median and Mode – Tutorial and Practice Questions

  • Posted by Brian Stocker MA
  • Date April 7, 2014
  • Comments 9 comments

Mean, Median and Mode

Median, Mode and Mean questions appear on standardized tests in most High School, College and some Nursing Entrance Tests

Audio Version of this Post

https://www.test-preparation.ca/Podcast/Mean-Mode-Tutorial-Practice.mp3

Mean, Median and Mode – Quick Review and Tutorial

Mean, Median and Mode

Mean, mode and median are basic statistical tools used to calculate different types of averages. Below is a quick tutorial followed by practice questions.

Mean
Mean is the most common form of average used. To calculate mean, you simple add up all the values of data given and divide by the number data provided.

Example
Find the mean of 8, 5, 7, 10, 15, 21
Sum of values = 8 + 5 + 7 + 10 + 15 + 21 = 66
Number of data = 6
Mean = 66/6 = 11

Median
Median refers to the middle value among a set or series of values after they have been arranged in numerical order. Median thus means the middle of the set of values. When two numbers fall in the middle, you simple add the value of the two numbers and divide by 2 to get the middle of the two numbers.

Example
Arrange these numbers in ascending order and then find the median
First arrange in ascending order 8, 5, 7, 10, 15, 21
= 5, 7, 8, 10, 15, 21

There are 6 numbers on the series and two fall in the middle = 8 and 10
The median = 8 + 10/2  = 18/2 =9

Mode
Mode refers to the most occurring number or value among a set of values. Note that it is possible not to have a most occurring number and then the answer becomes ‘No Mode’

Example
8, 5, 7, 10, 15, 21, 5, 7, 2, 5
Mode refers to the most occurring number 8, 10, 15, 2 and 21 occur once

5 occurs 3 times
7 occurs 2 times
The most occurring number is 5, which occurs three times.

Statistics Practice Questions

Mean, Median
and Mode


Probability

Making Inferences
from a Sample


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Practice Questions

1. Find the median of the set of numbers: 1,2,3,4,5,6,7,8,9 and 10.

a. 55
b. 10
c. 1
d. 5.5

2. Find the median of the set of numbers:  21, 3, 7, 17, 19, 31, 46, 20 and 43.

a. 19
b. 20
c. 3
d. 167

3. Find the median of the set of numbers:  100, 200, 450, 29, 1029, 300 and 2001.

a. 300
b. 29
c. 7
d. 4,080

4. The following represents age distribution of students in an elementary class. Find the mode of the values: 7, 9, 10, 13, 11, 7, 9, 19, 12, 11, 9, 7, 9, 10, 11.

a. 7
b. 9
c. 10
d. 11

5. Find the mode from these test results: 90, 80, 77, 86, 90, 91, 77, 66, 69, 65, 43, 65, 75, 43, 90.

a. 43
b. 77
c. 65
d. 90

6. Find the mode from these test results: 17, 19, 18, 17, 18, 19, 11, 17, 16, 19, 15, 15, 15, 17, 13, 11.

a. 15
b. 11
c. 17
d. 19

7. Find the mean of these set of numbers: 100, 1050, 320, 600 and 150.

a. 333
b. 444
c. 440
d. 320

8. The following numbers represent the ages of people on a bus: 3, 6, 27, 13, 6, 8, 12, 20, 5, 10. Calculate their mean of their ages.

a. 11
b. 6
c. 9
d. 110

9. These numbers are taken from the number of people that attended a particular church every Friday for 7 weeks: 62, 18, 39, 13, 16, 37, 25. Find the mean.

a. 25
b. 210
c. 62
d. 30

Answer Key

1. D
First arrange the numbers in a numerical sequence: 1,2,3,4,5,6,7,8,9, 10. Then find the middle number or numbers. The middle numbers are 5 and 6. The median = 5 + 6/2 = 11/2 = 5.5

2. B
First arrange the numbers in a numerical sequence: 3,7, 17, 19, 20, 21, 31, 43, 46. Next find the middle number. The median = 20

3. A
First arrange the numbers in a numerical sequence: 29,100, 200, 300, 450, 1029, 2001. Next find the middle number. The median = 300

4. B
Simply find the most recurring number. The most occurring number in the series is 9

5. D
Simply find the most recurring number. The most occurring number in the series is 90.

6. C
Simply find the most recurring number. The most occurring number in the series is 17.

7. B
First add all the numbers 100 + 1050 + 320 + 600 + 150 = 2220. Then divide by 5 (the number of data provided) = 2220/5 = 444

8. A
First add all the numbers 3 + 6 + 27 + 13 + 6 + 8 + 12 + 20 + 5 + 10 = 110. Then divide by 10 (the number of data provided) = 110/10 = 11

9. D
First add all the numbers 62 + 18 + 39 + 13 + 16 + 37 + 25 = 210. Then divide by 7 (the number of data provided) = 210/7 = 30

Mean Mode and Median Video Tutorial

Written by: Brian Stocker MA, Complete Test Preparation Inc.
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Tag:Average, Mean, Median, Mode, Practice Questions

author avatar
Brian Stocker MA

Previous post

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April 7, 2014

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Prime Factors Practice Questions
April 7, 2014

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    9 Comments

  1. christi
    April 10, 2018
    Reply

    That dash before the number throws you off, I assumed they were negative numbers.

    • Brian
      April 10, 2018
      Reply

      Good point and thanks! I have changed to semi colon.

  2. Oka Bazooka
    April 17, 2018
    Reply

    With the “and” it made it a little harder to order.

  3. rajvi
    March 4, 2019
    Reply

    It is good and helps to prepare for exams

  4. zhuy
    May 26, 2019
    Reply

    it was super easy

  5. ali abbas
    October 9, 2019
    Reply

    its a good website – thanks!

  6. john cena
    October 31, 2019
    Reply

    this is a great practice i have a test today on it and you just saved my life

  7. Apam Ibrahim
    March 5, 2020
    Reply

    It was so easy
    We need difficult ones

  8. Husain
    March 13, 2020
    Reply

    Thanks, I got to practice these sums

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Statistics Practice Questions

Mean, Median
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Probability

Making Inferences
from a Sample

Practice for your Test


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