cumulative frequency cumulative frequency graph
DESCRIPTION
Measuring the middle of a distribution The mean The mode The arithmetic average obtained by adding all the scores and dividing by the total number of scores The score which occurs most frequentlyTRANSCRIPT
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Cumulative frequency Cumulative frequency table
Cumulative frequency graph
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Measuring the middle of a distributionThe mean The modeThe arithmetic
average obtained by adding all the scores and dividing by the total number of scores
The score which occurs most frequently
![Page 3: Cumulative frequency Cumulative frequency graph](https://reader036.vdocuments.us/reader036/viewer/2022082213/5a4d1b087f8b9ab0599890b1/html5/thumbnails/3.jpg)
Middle of a distributionThe medianWhen placed in
order from smallest to largest, the middle score
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Find mean mode and median of…a) 3, 6, 5, 4, 5, 5, 6, 7b) 13, 12, 15, 13, 18, 14, 16, 15, 15, 17
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PercentilesIn a cumulative
frequency graph….The 25th percentile
is called the lower quartile
The 50th percentile is the middle value (median value)
The 75th percentile is called the upper quartile
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The interquartile rangeInterquartile range
= upper quartile – lower quartile
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Box and Whisker PlotsA 5 figure visual
display of a data set
The minimum value
The lower quartileThe medianThe upper quartileThe maximum
value
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Box and whisker plots