2. Inner Quartile Range (IQR)
3. Standard Deviation (or variability/variance)
The 5 number summary of a dataset is:
Min: 12
Q1: 16
Med: 22
Q3: 24
Max:30
What is the range of the dataset?
18
21, 22, 23, 25, 22, 27, 30, 32, 21, 31, 30, 31, 21, 24
Maximum: 32
12, 20, 21, 40, 13, 15, 19, 29, 24, 38, 37, 28, 25
If you know that the graph is not skewed, which measure of center would you use to determine the graph?
Mean
12, 13, 15, 16, 18, 10, 11, 18, 20, 21, 14
Q3: 18
2. The range of the dataset
3. How many modes occur in the dataset
10, 12, 15, 13, 17, 18, 29, 22, 21, 14, 25
**Calculators can be used to determine the quartiles**
34, 32, 31, 35, 29, 32, 28, 25, 35, 39, 38, 29, 31, 32
Q1: 29
Med: 32
Q3: 35
Max: 39
Determine if there are any outliers in the following dataset
{0, 15, 16, 19, 21, 25, 30, 40, 66}
Q3 + 1.5(IQR)
66 is an outlier
22, 26, 13, 19, 27, 20, 29, 13, 15, 16, 17, 19, 28, 29
Q1: 18
Med: 23
Q3: 26
Max:29
Standard Deviation: 4.4