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Mean, Median and Mode Mean What is it? An (arithmetic) mean is the average of a set of n numbers. How do you find it? Add all the elements in a set. Then, divide by the number of elements. Examples: The mean of 7 and 11 is 9. 7+11 The mean of -6, -3, 2, 4, and 4 is .2 (5 elements in the set) Jim's math test scores were 78, 88, 91, and 94.
Step 1) Add up the 3 numbers to give a total of 4+8+3=15. Step 2) Multiply the mean by the number of data points. 6x4=24. Step 3) The missing data point is the answer from Step 2 subtract the answer from Step 1 which is 25-15=9. Example 2) Five numbers have a mean of 3. Four of the numbers are 7, 5, 2 and -4.
The mean of a data set is what is commonly thought of as the "average"; it is the sum of all the numbers in the set divided by the number of values. In these worksheets, students determine the mean or average of various data sets. Just numbers: Worksheet #1 Worksheet #2. Worksheet #3 Worksheet #4. With context:
Example 1: finding the mean. Calculate the mean value of this list of numbers: 2 7 9 10 12 2 7 9 10 12. Find the total of the values. Add up all the values in the list. \text {Total}=2+7+9+10+12=40 Total = 2+7+9+10 +12 = 40. 2 Divide the total by the number of values. There are 5 5 values in the data set.
Aug 25, 2021 · This post will share key information, formulas, and vocabulary so that you can use math to determine the mean, median, mode, and range of any data set and understand what these values represent. After working through two examples, you will also have access to a free mean, median, and mode pdf practice worksheet that includes an answer key.
These printable central tendency worksheets contain a mixed review of mean, median, mode and range concepts. Around 8 data are used in level 1. Download the set. Mean, Median, Mode and Range: Level 2. Find the mean, median, mode and range of each set of data. Each sheet has six problems with around 15 data. Download the set.
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Example 1: finding the mean. Calculate the mean value of this list of numbers: 2 7 9 10 122 7 9 10 12. Find the sum of the data points. 2 + 7 + 9 + 10 + 12 = 402 + 7 + 9 + 10 + 12 = 40. 2 Divide the sum by the number of data points. There are 55 values in the data set. Divide the total by 5.5.
