Mode, Median, Mean

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Xiaodan Leng 5 years, 8 months ago

Created this as a copy of Mode, Median, Mean.

Name	Status	Author	Last Modified
Mode, Median, Mean	Ready to use	Julie Crowley	07/10/2016 21:41
Lois's copy of Mode, Median, Mean (Bill)	draft	Lois Rollings	25/08/2016 12:00
Mode, Median, Mean	draft	Xiaodan Leng	11/07/2019 05:27

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Question statement

Find the mean, median and mode of the following 10 test scores.

Give any introductory information the student needs.

			Name	Type	Generated Value

dat	list	Nested 1×10 list
a	list	List of 10 items
mo	integer	12
me	number	9
md	number	8.5

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
satisfy(
  [a],
  [
    //a is given as a list by generating 10 numbers between 4 and 18
    repeat(random(4..18),10)],
  [ //the conditions are given to force one mode and a reasonably large variance
    //to give some variation.
    length(mode(a))=1,
    variance(a)>8
    ],
  250
  )

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: `list`

[ [ 6, 6, 5, 12, 7, 4, 16, 12, 12, 10 ] ]

→ Used by:

This variable doesn't seem to be used anywhere.

Parts

Gap-fill
1. Gap Gap 0. Number entry
  Add
2. Gap Gap 1. Number entry
  Add
3. Gap Gap 2. Number entry
  Add
1. Step Information only

Gap-fill

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

{a[0]}, {a[1]}, {a[2]}, {a[3]}, {a[4]}, {a[5]}, {a[6]}, {a[7]}, {a[8]}, {a[9]}

Mean: Gap 0.

Median: Gap 1.

Mode: Gap 2.

Give your answers to 1 decimal place where appropriate.

Advice

The mean, median and mode are all averages. Each gives us some information about a typical member of a set of data.

To calculate the mean, you need to find the total of all the test scores and divide it by the number of scores -- in this case 10.

The median is the middle score, when the scores are arranged in order. In this case the number of scores is even, so we need to find the mean of the 5th and 6th scores.

The mode is the most frequent score.

See http://www.skillsyouneed.com/num/averages.html

for more information on these three types of average.

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

This question is used in the following exam:

IY445 practice by John Wick in John's workspace.

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Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Xiaodan Leng 5 years, 8 months ago

Error in variable testing condition

Error

Warning

Generated value: `list`

Parts

Gap-fill

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Error

Mode, Median, Mean

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

History

Comment

Checkpoint description

Xiaodan Leng 5 years, 8 months ago

Error in variable testing condition

Error

Warning

Generated value: list

Parts

Gap-fill

Generated value: `list`