Julie's copy of Mean from a frequency table

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Julie Crowley

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Julie Crowley 8 years, 5 months ago

Published this.

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Julie Crowley 10 years, 4 months ago

Created this as a copy of Mean from a frequency table.

Name	Status	Author	Last Modified
Julie's copy of Mean from a frequency table	draft	Julie Crowley	08/10/2016 20:34
Julie's copy of Mean from a frequency table - classes	draft	Julie Crowley	08/10/2016 20:34
Mean, median and mode from a frequency table with classes 1	draft	Julie Crowley	06/03/2017 15:00
Mean, median and mode from a frequency table with classes 2	draft	Julie Crowley	06/03/2017 15:00
Mean, median and mode from a frequency table with classes 2b	draft	Julie Crowley	06/03/2017 15:01
Mean, median and mode from a frequency table with classes 1(b)	draft	Julie Crowley	16/04/2018 18:01
Mean, median and mode from a frequency table with classes 2c	draft	Julie Crowley	06/03/2017 15:04
Mean, median and mode from a frequency table with classes 1c	draft	Julie Crowley	07/03/2017 14:49
Catherine's copy of Mean, median and mode from a frequency table with classes 2c	draft	Catherine Palmer	02/03/2018 14:45
Catherine's copy of Mean, median and mode from a frequency table with classes 1c	draft	Catherine Palmer	02/03/2018 14:47
Mean and median from a frequency table with classes 1(b)	draft	Julie Crowley	25/04/2018 18:41
Mean and mode from a frequency table with classes 1c	draft	Julie Crowley	25/04/2018 18:42
Mean and standard deviation from a frequency table with classes 1c	draft	Julie Crowley	25/04/2018 18:43
Michael's copy of Mean and standard deviation from a frequency table with classes 1c	draft	Michael Proudman	07/12/2021 09:49
Simon's copy of Julie's copy of Mean from a frequency table	draft	Simon Thomas	27/03/2019 09:32
Simon's copy of Julie's copy of Mean from a frequency table - classes	draft	Simon Thomas	27/03/2019 09:40

There are 19 other versions that do you not have access to.

Question statement

Ali plays a computer game 20 times. In each game he gets a score between -10 and 10.

His results are shown in the table below.

Calculate his mean score over the 20 games.

Give any introductory information the student needs.

			Name	Type	Generated Value

a	integer	2
c	integer	5
b	integer	3
d	integer	5
f	integer	5
q	integer	-4
p	integer	-7
s	integer	7
r	integer	0
t	integer	8
Answer	rational	49/20
Total	integer	49
data	list	Nested 5×2 list

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
random(0..3)

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`

This variable doesn't seem to be used anywhere.

Parts

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.

{table ( data, ["Score", "Frequency"]) }

Mean Score: Unnamed gap

Do not round your answer.

Advice

You need to calculate Ali's total score and then divide this by the total number of games he played.

$(\var{a} \times \var{p}) + (\var{b} \times \var{q}) + (\var{c} \times \var{r}) + (\var{d} \times \var{s}) + (\var{f} \times \var {t}) = \var{Total}$

$\var{Total} \div 20 =\var{Answer}$

Give a worked solution to the whole question.

Use this tab to check that this question works as expected.

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

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Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Julie Crowley 8 years, 5 months ago

Julie Crowley 10 years, 4 months ago

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

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Julie's copy of Mean from a frequency table

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Julie Crowley 8 years, 5 months ago

Julie Crowley 10 years, 4 months ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

Generated value: `integer`