Unit 1

Question 1

2 types of variables

Answer 1

Quantitative and Categorical

Question 2

Ways to display Categorical Variables

Answer 2

Bar chart
Pie chart
Frequency table
Rel Freq Table

Question 3

Types of Quantitative variables

Answer 3

Discrete and continuous

Question 4

Ways to display Quantitative variables

Answer 4

Stem and leaf plot (B2B too)
Dot plot
Histogram

Question 5

How to describe Quantitative variables graph (5 ways)

Answer 5

1. Shape
2. Center
3. Spread
4. Outliers
5. Gaps/Clusters

Question 6

Summary statistics for quantitative variables

Answer 6

1. Mean
2. Median
3. Mode
4. Range
5. StanDev
6. Min/Max

Question 7

IQR

Answer 7

Middle 50% of data spread; Q1-Q3

Question 8

Calculate outliers

Answer 8

Fence method; Q3+1.5IQR, and Q1-1.5IQR
STANDEV method; +- 2standevs

Question 9

5 number summary

Answer 9

1. Min
2. Q1
3. Median
4. Q3
5. Max