Simon's copy of Q1 (Percentage Error)

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Simon Thomas 6 years, 1 month ago

Created this as a copy of Q1 (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

There are 10 other versions that do you not have access to.

Question statement

Calculate the following correct to one decimal place:

Give any introductory information the student needs.

			Name	Type	Generated Value

material	string	brass
est	integer	30
lent	integer	36
ans1	number	16.6666666667
name1	string	Rose
est1	integer	700
est2	integer	8000
cost	integer	720
ans2	number	2.7777777778
att	integer	8120
ans3	number	1.4778325123
game	string	hurling
item	string	motorbike

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
random('copper','brass','metal','steel')

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: `string`

brass

This variable doesn't seem to be used anywhere.

Parts

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

Gap-fill

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

The length of a $\var{material}$ bar was estimated to be $\var{est}$ cm. If the true length was $\var{lent}$ cm, calculate the percentage error.

Unnamed gap%

Advice

Work out the positive value of error (denoted by vertical lines below, e.g. |5-7| is 2 not -2), divide by the true value, then multiply by 100 to convert to a percentage. Remember to give answers to 1 d.p. as requested.

Part 1:

Percentage error:

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

Part 2:

Percentage error:

$\frac{|\var{est1} - \var{cost}|}{\var{cost}} \times 100 = \var{precround(ans2,1)}$ %

Part 3:

Percentage error:

$\frac{|\var{est2} - \var{att}|}{\var{att}} \times 100 = \var{precround(ans3,1)}$ %

Give a worked solution to the whole question.

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There was an error which means the tests can't run:

Part	Test	Passed?
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Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Information only
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet

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: `string`

Parts

Gap-fill

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Simon's copy of Q1 (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: string

Parts

Gap-fill

Generated value: `string`