Understanding Quartiles and Percentiles

It is the three-score points which divides the distribution into four equal parts.

• deciles

• percentile

• quartiles

• quantiles

What is another term for the lower quartile (Q1) in a dataset?

• First quartile

• Second quartile

• Third quartile

• Upper quartile

If a data set has 9 elements, which position corresponds to the third quartile (Q3) according to the Mendenhall and Sincich method?

• 3rd position

• 6th position

• 7th position

• 8th position

How many percent of the dataset is below the upper quartile (Q3)?

• 25%

• 50%

• 75%

• 100%

It is a more exact method in calculating quartiles of ungrouped data.

• Mendenhall and Sincich method

• Linear Interpolation

• Tukey's method

• Listing method