• 1 Marks

QTB – Nov 2014 – L1 – SA – Q12 – Data Collection Analysis

Calculates the relative frequency of babies weighing between 4-5 kg.

Given the frequency distribution of weights of babies at the post-natal ward of a University Teaching Hospital as:

Weight (kg) Number of babies
2 – 3 32
4 – 5 17
6 – 7 11

Which of the following values represents the relative frequency of the class 4-5 kg weight of babies in the ward?
A. 0.17
B. 28%
C. 0.283
D. 17%
E. 0.17%

C

Explanation: The correct answer is C. To calculate the relative frequency of the 4-5 kg weight class:

  1. Total frequency = 32 + 17 + 11 = 60
  2. Frequency of the class (4-5 kg) = 17

Now, calculate the relative frequency 17/60

 

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