Q. How do I find the mean, median, and mode of a data set?

Answer

1.)  Finding the Mean: The mean is the mathematical average of all data points

Data Set – 2, 4, 1, 3, 2, 5

  • Step 1 - Sum up all 6 data points
  • Step 2 - Divide value by the total number of data points

Mean (Step 1) = 1 + 2 + 2 + 3 + 4 + 5 = 17 

Mean (Step 2) = 17/6 = 2.833  

2.)  Finding the Median: The median is the middle score of all data points

Data Set – 2, 4, 1, 3, 2, 5

  • Step 1 - Arrange data points from lowest to highest scores
  • Step 2 - Take the number of total number of data points and add 1
  • Step 3 - Divide the number from step 2 by 2
  • Step 4 – The median is the number that falls in that place.  As you may have noticed there is no possible number in the 3.5th place, which is the case when you have an even number of data points.  In this situation take the number in the 3rd place and the number in the 4th place and average them.

Median (Step 1) = 1, 2, 2, 3, 4, 5 

Median (Step 2) = 6 + 1 = 7

Median (Step 3) = 7/2 = 3.5

Median (Step 4) = 2 + 3/2 = 5/2 = 2.5

3.)  Finding the Mode: The mode is the most frequently occurring data point

Data Set – 2, 4, 1, 3, 2, 5

  • Step 1 - Arrange data points from lowest to highest scores
  • Step 2 – Find the most commonly occurring score

Mode (Step 1) = 1, 2, 2, 3, 4, 5 

Mode (Step 2) = 1, 2, 2, 3, 4, 5 = 2 

Topics

  • Last Updated Apr 01, 2018
  • Views 1
  • Answered By Ramon Daines

FAQ Actions

Was this helpful? 0   0

Can't find an answer to your question?

Use the options below.

Ask a Coach is staffed by an academic coach after 3 p.m. PST daily.

If there is not a coach on duty, submit your question. We will answer you once a coach is available.