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Limits of Accuracy Answers

The document discusses calculating the smallest possible mean and greatest possible range for a set of 6 plant heights given to one decimal place. It also finds the lower bound for the width and area of a rectangle given the width of 50cm to 2 significant figures and length of 115cm to 3 significant figures. The smallest possible mean is calculated as 3.1cm. The greatest possible range is calculated as 9.65cm - 3.05cm = 6.6cm. The lower bound for the width is calculated as 48cm and the lower bound for the area is calculated as 5,400cm^2.

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athman
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523 views10 pages

Limits of Accuracy Answers

The document discusses calculating the smallest possible mean and greatest possible range for a set of 6 plant heights given to one decimal place. It also finds the lower bound for the width and area of a rectangle given the width of 50cm to 2 significant figures and length of 115cm to 3 significant figures. The smallest possible mean is calculated as 3.1cm. The greatest possible range is calculated as 9.65cm - 3.05cm = 6.6cm. The lower bound for the width is calculated as 48cm and the lower bound for the area is calculated as 5,400cm^2.

Uploaded by

athman
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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10. The heights of 6 plants are listed below.

Each height is given to one decimal place.


4·S5 1·J.< 8' /') ,. tt; q./15"'" �l. e
)

r· re,-
4.5cm 7.2cm 8.1cm 9.6cm 9.1cm 3.1cm
q,'-/'J </·01 q.,;-i, q.0') ,os
(a) Work out the smallest possible mean.

l ti). __
.........................cm
(2)

(b) Work out the greatest possible range.

9.65 - 3.05 = 6.6

6.6
.........................cm
(2)

11. The width of a rectangle is 50cm, correct to 2 significant figures.


The length of a rectangle is 115cm, correct to 3 significant figures.

(a) Write down the lower bound for the width.

�q-�
.........................cm
(1)

(b) Calculate the lower bound for the area of the rectangle.

5{{i.J.,t;
.........................cm2
(2)
© Corbettmaths 2015

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