The number of times an item, number, or event occurs in a set of data.
Frequency
Find the mean, median, mode, and range of the following data set:
(2, 1, 4, 6, 6, 8, 2, 1, 3, 2, 0)
Round to the nearest whole number.
Mean = 3
Median = 2
Mode = 2
Range = 8
What is the IQR?

IQR = Q3-Q1
IQR = 91-70
IQR = 21
Determine whether the following questions are statistical:
1) Who is my favorite basketball player?
2) What is the favorite subject of sixth graders?
3) How many brothers does my best friend have?
1) Not statistical
2) Statistical
3) Not statistical
A way of displaying numeric data using horizontal and vertical bars so that the height or length of the bars indicates frequency.
Histogram
Find the mean, median, mode, and range of the following data set:
(5.23, 5.15, 5.27, 8.21, 6.38, 2.95, 8.21, 3.23)
Mean = 5.58
Median = 5.25
Mode = 8.21
Range = 5.26
Below is a list of salaries earned by 10 employees at Clinch County Middle School. Find the IQR of the 10 salaries.

Q1 = 38,000
Q3 = 48,000
IQR = 48,000 - 38,000
IQR = $10,000
What is the median of the date set in the box and whisker plot?

Median = 60
A measure of spread for a set of data. To calculate this term, you must subtract the smallest value from the largest value.
Range
Find the mean, median, mode, and range of the following data set:
(125, 136, 189, 136, 212, 218, 152, 175, 125)
Mean = 163
Median = 152
Mode = 125 & 136
Range = 93
Examine the high temperature from last week and find the IQR.

Q1 = 68
Q3 = 74
IQR = Q3 - Q1
IQR = 74 - 68
IQR = 6
What is the third quartile of the following box and whisker plot?

Q3 = 1.9
The difference between the first and third quartiles.
Interquartile Range
Find the mean, median, mode, and range of the following data set:
(2.89, 2.38, 6.38, 2.15, 4.13, 4.32, 3.89, 3.35, 2.38)
Round to the nearest thousandth.
Mean = 3.54
Median = 3.35
Mode = 2.38
Range = 4.23
What is Q1, Q3, and IQR?

Q1 = 1.3
Q3 = 1.9
IQR = Q3-Q1
IQR = 1.9 - 1.3
IQR = 0.6
What is the range of the data set of the box and whisker plot?

Range = 73 - 55
Range = 18
Describes how spread out or closely clustered a set of data is.
Variability
Find the mean, median, mode, and range of the following data set:
(2.5, 3.1, 3.7, 2.9, 4.5, 8.1, 2.1)
Mean = 3.84
Median = 3.1
Mode = No Mode
Range = 6
What is the IQR of the date set below?
(2.5, 5.2, 5.2, 4.5, 4.4, 8.2, 6.5, 5.3, 8.4)
Q1 = 4.45
Q3 = 7.35
IQR = Q3 - Q1
IQR = 7.35 - 4.45
IQR = 2.9
What do we need to comment on the distribution of data? What does each letter represent?
What is CSOC OR SOCS