Statistics and Probability Quiz

What is the measure of central tendency that is most affected by extreme values?

• Mean

• Median

• Mode

• Range

If a dataset has two modes, it is called:

• Unimodal

• Bimodal

• Trimodal

• Multimodal

The middle value of an ordered dataset is called:

• Mean

• Median

• Mode

• Variance

Which measure of dispersion is calculated by subtracting the lowest value from the highest value?

• Mean

• Standard Deviation

• Range

• Variance

Which measure of variability is the square root of variance?

• Mean

• Range

• Standard Deviation

• Mode

The sum of all data values divided by the number of values is called:

• Mode

• Median

• Mean

• Range

Which of the following is NOT a measure of central tendency?

• Mean

• Median

• Mode

• Standard Deviation

If the mean is greater than the median in a distribution, the distribution is:

• Symmetric

• Left-skewed

• Right-skewed

• Uniform

A measure that describes the spread of data is called:

• Central tendency

• Probability

• Dispersion

• Skewness

What does a standard deviation of zero indicate?

• The data is perfectly spread out

• All data points are equal

• There is a large variation in the data

• The mean is equal to the median