Relative Measures

It is the ratio of the frequency of a category to the total frequency in a distribution.

• cumulative frequency

• frequency

• relative frequency

• tally

The ratio of a joint relative frequency to a related marginal relative frequency in a two-way table.

• Conditional Relative Frequency

• Joint Relative Frequency

• Marginal Relative Frequency

• Relative Frequency

Shows the ratio of the number of data in each category to the total number of data items. The ratio can be expressed as a fraction, decimal or percent.

• Relative Frequency Table

• Conditional Relative Frequency

• Marginal Relative Frequency

• Joint Relative Frequency

The ratio of the frequency in a particular category divided by the total number of data values.

• Joint Relative Frequency

• Conditional Relative Frequency

• Marginal Relative Frequency

• Relative Frequency

David estimates the number of balls in a box as 60. If the actual number of balls is 75, find the relative error of David’s estimation.

• 1.25

• 0.8

• 0.25

• 0.2

The measured length of a ribbon is 68 cm, correct to the nearest cm. Find the relative error.

The weight of a notebook computer is (3.0 ± 0.15) kg. Find the relative error of this measurement.

• 0.2

• 0.1

• 0.05

• 0.025

Ken uses a ruler with scale interval of 0.5 cm to measure the length of each side of a square. If the length of each side is measured as 12.5 cm, find the relative error in calculating the perimeter of the square.

• 0.02

• 0.04

• 0.08

• None of the above.

• 42.0 ≤ x < 46.0

• 43.0 ≤ x < 45.0

• 43.6 ≤ x < 44.4

• 43.8 ≤ x < 44.2

What is the term for the proportion of a specific category relative to the total number of observations?

• Frequency

• Relative frequency

• Joint relative frequency

• Marginal relative frequency

Answer explanation

The term 'relative frequency' refers to the proportion of a specific category compared to the total number of observations. It provides insight into how often a category occurs within the overall dataset.