Welcome :: Homework Help and Answers :: Mathskey.com
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

13,433 questions

17,804 answers

1,438 comments

47,275 users

Math project .......................................

0 votes
what is the meaning of mean, median, mode and range.
asked Mar 4, 2013 in BASIC MATH by dkinz Apprentice
reshown Mar 4, 2013 by moderator

1 Answer

0 votes

Let’s consider the set (4, 12, 22, 32, 9, 4, 78)

Mean:
The mean is the sum of the values in the data set divided by the number of data.
mean = sum of the values / number of items in the set
= (4 + 12 + 22 + 32 + 9 + 4 + 78) / 7
= (161) / 7
= 23

Median:
The median is the middle value of the data.
Write the data in numerical order from least to greatest. 4, 4, 9, 12, 22, 32, 78.
Observe the data, the number 12 is the middle value, so median is 12.


Mode:
The mode is the number that occurs most often in a set of data
Observe the data, The number 4 appears twice. So, the mode is 4.

answered Mar 6, 2013 by ricky Pupil

Range : The largest value in the list is 78, and the smallest is 4.So, the range is 78 - 4 = 74.

Related questions

...