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PROBABILITY AND

STATISTICS

HIGHER GCSE

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TOPICS - PROBABILITY AND STATISTICS

4

Surveys and

Sampling

5

Probability

1

Averages

2

Representing

Data

3

Comparing Data

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1

Averages

Notes

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4 numbers have a mode of ! a

range of " and a mean of "# $hat

are the numbers%

$or& out the median

$hole boo& 2' ( 23

)2*!*2' +ordsst2' pages 2' ( 23,

)4!*2' +ords

st''

pages2*!*2' - 4!*2'

)23!'''

Average 23'''.'' ) 230

midpoint Midpointx freq

5 "'

2#5 225

*#5 *5

2*#5 ,5

/otal 5' ,45

,45 . 5' ) 12.9

,*

"4-5")2,

3! 4! 5! ,! ,! *! *! *! "! 0

6.5

3 *

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2

Representing

Data

Notes

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2. For the data in the previous question,complete a box and whisker plot

b) Calculate the interquartile range

(Total marks)

'

4

3'

5

,'

,'g+eight--------

Roughly 3" eggs are ,3 or less

/hat means about 22are more

,5-5)141aept 2-,

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3

Comparing Data

Notes

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/he upper uartile is 35!

+hih means of the data

is belo+! 6 is above

6 of 4" ) 12

/uesday has higher median!

range and 78R

2'*m

9radient )

)

Positive1hard to say +hether strong or +ea&

/aller people tend to +eigh more

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4

Surveys and

Sampling

Notes

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:very item has an eual hane of being seleted

Sample si;es are proportional to the si;e of eahpopulation group

/otal ) *4'

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5

Probability

Notes

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Suessful outomes? 12!" 14!, 1,!4 1"!2

, possible outomes

@ 2 4 6 8

2 4 , " 10

4 , " 10 2

6 " 10 2 4

8 10 2 4 ,

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HANDOUTS

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TOPICS - PROBABILITY AND STATISTICS

4

Surveys and

Sampling

5

Probability

1

Averages

2

Representing

Data

3

Comparing Data

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1

Averages

Notes

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4 numbers have a mode of ! a

range of " and a mean of "# $hat

are the numbers%

$or& out the median

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2

Representing

Data

Notes

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2. For the data in the previous question,complete a box and whisker plot

b) Calculate the interquartile range

(Total marks)

+eight--------

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3

Comparing Data

Notes

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4

Surveys and

Sampling

Notes

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5

Probability

Notes

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