Data Visualisation using SPSS

Name

USN

Section

Which measure of central tendency is most affected by extreme values?

• Mean
• Median
• Mode
• None

The mean is best used when data is:

• Categorical
• Ordinal
• Interval or Ratio with no outliers
• Highly skewed

When all values are equally frequent, the mode is

• Equal to mean
• Zero
• Not defined
• Equal to median

If standard deviation is zero, the values are

• Uniformly spread
• All the same
• Skewed
• Random

Standard deviation is always

• Positive or zero
• Negative
• Between –1 and +1
• None

Correlation indicates the

• Size of a dataset
• Cause-effect relationship
• Strength and direction of a relationship
• Variance in a variable

A correlation coefficient of +1 indicates a

• No relationship
• Perfect negative correlation
• Perfect positive correlation
• Random relationship