Simon's copy of Q5 percentage error

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Simon Thomas 6 years, 1 month ago

Created this as a copy of Q5 percentage error.

Name	Status	Author	Last Modified
Q9 (Percentage error in area of circle)	draft	TEAME CIT	11/10/2016 22:42
Q11 & 12 (Percentage Error with multipling and rounding-off)	draft	TEAME CIT	11/10/2016 22:47
Q1 (Percentage Error)	draft	TEAME CIT	07/10/2016 23:19
Q4 (Percentage error when estimating total cost of shop items)	draft	TEAME CIT	07/10/2016 23:18
Q5 percentage error	draft	TEAME CIT	08/10/2016 19:57
Q6 (Calculate the minimum and maximum approximations of an estimate)	draft	TEAME CIT	08/10/2016 19:57
Q7 (Calculate the estimate, actual and from these the percentage error)	draft	TEAME CIT	08/10/2016 19:58
Q8 (Calculate the estimate, actual and the percentage error from these)	draft	TEAME CIT	08/10/2016 19:58
Simon's copy of Q1 (Percentage Error)	draft	Simon Thomas	20/02/2019 11:19
Simon's copy of Q4 (Percentage error when estimating total cost of shop items)	draft	Simon Thomas	20/02/2019 11:53
Simon's copy of Q5 percentage error	draft	Simon Thomas	20/02/2019 11:58
Simon's copy of Q6 (Calculate the minimum and maximum approximations of an estimate)	draft	Simon Thomas	20/02/2019 12:09
Simon's copy of Q7 (Calculate the estimate, actual and from these the percentage error)	draft	Simon Thomas	20/02/2019 12:34
Simon's copy of Q8 (Calculate the estimate, actual and the percentage error from these)	draft	Simon Thomas	20/02/2019 11:35

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Question statement

The exact relationship between Celsius and Fahrenheit is: $F = \frac{9}{5}C + 32$ . An approximate relationship between Celsius and Fahrenheit is given by the follow rule:

To find F, add 15 to C and double your answer.

Give any introductory information the student needs.

			Name	Type	Generated Value

num	integer	15
ans2	integer	60
ans1	rational	59
ans3	decimal	dec("1.694915254237288135593220338983050847458")

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
random(10..35#5)

JME function reference

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `integer`

→ Used by:

ans1
ans2

This variable doesn't seem to be used anywhere.

Parts

Part a) Gap-fill
1. Gap Number entry
  Add
Part b) Gap-fill
1. Gap Number entry
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Part c) Gap-fill
1. Gap Number entry
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Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

Find the value of F when C is $\var{num}$ degrees using the exact relationship formula.

Unnamed gapdegrees

Advice

(a)

Exact relationship formula:

$((\frac{9}{5}) \times \var{num}) + 32 = \var{ans1}^o$ F

(b)

Approximate relationship formula:

$(\var{num} + 15) \times 2= \var{ans2}^o$ F

(c)

Percentage error:

$\frac{|\var{ans2} - \var{ans1}|}{\var{ans1}} \times 100 = \var{precround(ans3,1)}$ %

Give a worked solution to the whole question.

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Part	Test	Passed?
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Number entry		Hasn't run yet
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Gap-fill		Hasn't run yet
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This question is used in the following exam:

Error & Approximation by Simon Thomas in Maths support.

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Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Simon Thomas 6 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

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Simon's copy of Q5 percentage error

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Simon Thomas 6 years, 1 month ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`