Exploratory Data Analysis (EDA)

What is the mean of the numbers: 10, 20, 30, 40, 50?

• 20

• 30

• 40

• 50

What is the median of the numbers: 5, 10, 15, 20, 25?

• 10

• 15

• 20

• 25

What is the mode of the numbers: 2, 2, 3, 4, 5, 5, 5?

• 2

• 3

• 5

• No mode

Which measure of central tendency is most affected by outliers?

• Mean

• Median

• Mode

• None Of the Above

If the standard deviation of a dataset is 0, what does it mean?

• Data has no variability

• Data is normally distributed

• Data contains an outlier

• Data is very large

What is the range of the numbers: 5, 15, 25, 35, 45?

• 15

• 20

• 40

• 50

Correlation values range between:

• -10 to 10

• -5 to 5

• -1 to 1

• 0 to 1

What does a correlation of +1 indicate?

• Strong negative relationship

• No relationship

• Strong positive relationship

• Weak relationship

Which correlation value indicates no relationship?

• 0

• -1

• 1

• 0.5

What does a negative correlation mean?

• Both variables increase together

• One variable increases, the other decreases

• No relationship

• Both variables decrease together