Class width refers to the difference between the upper and lower boundaries of any class (category). Depending on the author, it’s also sometimes used more specifically to mean:
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The difference between the upper limits of two consecutive classes, or
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The difference between the lower limits of two consecutive classes.
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And take -axis as Frequency density and -axis as Height
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From above graph we can observe half of third frequency density lies in the interval to
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\n"},"encodingFormat":"text/markdown","learningResourceType":"Practice problem","suggestedAnswer":[],"text":"The table below shows the heights, in metres, of boys and of girls.\n
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Height
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No. boys
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No. girls
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\nEstimate the number of children whose heights are metres or more."},"name":"Quiz on Representation of Data","typicalAgeRange":"10-17","url":"https://www.embibe.com/questions/The-table-below-shows-the-heights%2C-in-metres%2C-of-50-boys-and-of-50-girls.%0A%0A%0A%0AHeight-m%0A1.2%0A1.3-%0A1.6-%0A1.8-1.9%0A%0A%0ANo.-boys-f%0A7%0A11%0A26%0A6%0A%0A%0ANo.-girls-f%0A10%0A22%0A16%0A2%0A%0A%0A%0AEstimate-the-number-of-children-whose-heights-are-1.7-metres-or-more./EM8269063"}
Dean Chalmers and Julian Gilbey Solutions for Chapter: Representation of Data, Exercise 4: EXERCISE 1B
Author:Dean Chalmers & Julian Gilbey
Dean Chalmers Mathematics Solutions for Exercise - Dean Chalmers and Julian Gilbey Solutions for Chapter: Representation of Data, Exercise 4: EXERCISE 1B
Attempt the practice questions on Chapter 1: Representation of Data, Exercise 4: EXERCISE 1B with hints and solutions to strengthen your understanding. Cambridge International AS & A Level Mathematics : Probability & Statistics 1 Course Book solutions are prepared by Experienced Embibe Experts.
Questions from Dean Chalmers and Julian Gilbey Solutions for Chapter: Representation of Data, Exercise 4: EXERCISE 1B with Hints & Solutions
Each of the trainees at a secretarial college was asked to type a copy of a particular document. The times taken are shown, correct to the nearest minutes, in the following table.
Time taken (min)
No. trainees
It is given that trainees took between and minutes. Calculate an estimate for the value of when:
A railway line monitored of its August train journeys to find their departure delay times. The results are shown below. It is given that of these journeys were delayed by less than minutes.
How many journeys were monitored?
A railway line monitored of its August train journeys to find their departure delay times. The results are shown below. It is given that of these journeys were delayed by less than minutes.
Calculate an estimate of the number of these journeys that were delayed by:
to minutes
A university investigated how much space on its computers' hard drives is used for data storage. The results are shown below. It is given that hard drives use less than for data storage.
Find the total number of hard drives represented.
A university investigated how much space on its computers' hard drives is used for data storage. The results are shown below. It is given that hard drives use less than for data storage.
Calculate an estimate of the number of hard drives that use less than