Post on 10-Jun-2018
Data SetTo find the mean:1. add all the numbers in the data set 2. divide by how many numbers there are.
18, 56, 90, 90, 25, 47, 36
Mean = AverageMean: the mathematical average of a set of numbers
Data Set:13, 27, 55, 72, 44, 31, 28, 27, 27
Data Set:10, 56, 23, 33, 45, 12, 18, 20
What is the mean?
What is the mean?
To find the middle you first have to make sure that your data set is in order from least to greatest.
Median =
Middle
Place the numbers in order by dragging them to the blue box.
2831
24
1311
556955
89
The median is the middle of a data set.
13 8955 7255312811 24
31 is the number that is exactly in the middle.31 is the median of this data set.
Now that the numbers are in order, let's find the median. Remember, the median is the number or number(s) in the middle.
Find the median of these two data sets
Data Set13, 89, 55, 72, 69, 31, 28, 11, 24
Remember toput them in order from least to greatest.
Data Set 7, 48, 84, 14, 90, 99, 37, 78, 31
Highlight the numbers as you count using the yellow and red squares to help you find the median.
13, 89, 55, 55, 69, 31, 28, 11, 24
Mode: is data which appears most frequentlyFrequently: how often something happens
Data Set
Which number is the mode?
55
Sometimes there isn't a mode in a data set; this happens if all numbers are listed the same amount of times.
7, 48, 84, 14, 90, 99, 37, 78, 31Data Set
What is the mode?
None
Data SetTo find the range:1. list the numbers in the data set from least to greatest. 2. subtract the highest and lowest numbers.
89, 73, 84, 91, 87, 77, 94
Range: subtract the greatest number by the least number
Data Set:65, 56 , 57, 75, 76, 66, 64
Data Set:10, 56, 23, 33, 45, 12, 18, 20
What is the range?
What is the range?
28 52 44 3917 44 36 7332 44 42 5340 33 33 37
Create a Line Plot:Data
15 20 25 30 35 40 45 50 55 60 65 70
Line Plot Vocabulary
Cluster - data that is grouped closely together
Outlier - data that is very far away from the other data
Range - the difference between the greatest and least number in the data set.