Mean
What is the mean? How do you find it.
The average of a data set. Find the sum of the data and divide by the amount of data you have.
What is the median and how do you find it.
The middle of the data set. List from least to greatest, cross off low to high until you are in the middle of the set.
What is the mode ?
the number in the set that repeats the most amount of time
take the highest and lowest number and subtract.
What quartile is the lower range of data.
Q1
Find the mean of the numbers: 6, 8, 10, 12
9
Find the median: 3, 7, 9, 11, 15
9
Find the mode: 2, 4, 4, 6, 8
4
Find the range: 4, 9, 12, 15
11
Find Q1 for the data set:
2, 4, 6, 8, 10, 12, 14
4
Find the mean: 15, 18, 22, 25, 30
22
Find the median: 4, 8, 12, 16
10
Find the mode: 5, 7, 7, 9, 9, 10
7 and 9
Find the range: 20, 25, 30, 35, 40
20
Find Q3:
5, 7, 9, 11, 13, 15
13
A student scored 70, 75, 80, and 85 on four tests. What is the mean score?
77.5
Find the median: 10, 2, 6, 14, 8
8
Find the mode: 12, 15, 18, 21
no mode
Find the range: 7, 3, 11, 19, 5
16
Find Q1 and Q3:
3, 6, 7, 8, 12, 13, 14, 18
Q1- 6.5
Q3- 13.5
The mean of 5 numbers is 20. What is the total sum of the 5 numbers?
100
The ordered data set is: 5, 7, 9, 11, 13, 15. What is the median?
10
A data set has values: 3, 3, 5, 6, 6, 6, 8. What is the mode?
6
The highest temperature is 92°F and the lowest is 65°F. What is the range?
27
The data set represents test scores:
55, 60, 65, 70, 75, 80, 85, 90, 95
- Find Q1, median, and Q3
Q1 - 62.5
Median - 75
Q3- 87.5