5 G-K Measuring spread, Box-and-Whisker Plots, Standard … · 2018. 9. 9. · 5 GK Measuring...
Transcript of 5 G-K Measuring spread, Box-and-Whisker Plots, Standard … · 2018. 9. 9. · 5 GK Measuring...
5 GK Measuring spread, BoxandWhisker Plots, Standard deviation day 3 A5.notebook
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November 11, 2014
Oct 210:57 AM
5 FK
Measuring spread, BoxandWhisker Plots,
Standard deviation
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define
If there are two scores in the middle, average them to find the median.
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Oct 1610:49 AM
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Assignment:
Exercises 5 F.1 # 6, 115 F.2 # 35 F.3 # 65 G # 1
5 GK Measuring spread, BoxandWhisker Plots, Standard deviation day 3 A5.notebook
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November 11, 2014
Nov 711:07 AM
Starter
Warm Up 5F on your desks.
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From Paper 1
2013-2014
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A boxandwhisker plot (also called a boxplot) is a visual representation of the 5number summary.
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The standard deviation is a measure of how much the numbers deviate from the mean. It is calculated using the formula:
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calculate the standard deviation of the following numbers:
2, 5, 4, 6, 7, 5, 6
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number frequency
4 2
5 5
6 3
7 4
8 7
Grouped Discrete Data
calculate the standard deviation of the following numbers
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Mark frequency
030 6
3160 2
6190 7
91120 4
121150 5
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November 11, 2014
Nov 1111:02 AM
Starter
Warm Up 18.1 is on your desk.
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If your data sets are different sizes, it is hard to compare their spread using standard deviation or variance. Therefore we use the coefficient of variation, which is a ratio of the standard deviation to the mean, expressed as a percent.
coefficient of variation
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Note: cumulative frequency cannot be entered as it appears in the table
Enter the data lists:
L1 ‐ 5, 3, 3, 6, 4, 5, 3, 7, 5, 7, 1, 8, 9, 5
L2 – 9, 6, 5, 5, 7, 5, 6, 7, 6, 4, 5, 8,
Make: A frequency histogram
A box‐and‐whisker plot
(Parallel box‐and‐whisker plots
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Assignment:
Exercises 5 H # 1, 2I.1 # 1I.2 # 1K # 2
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November 11, 2014
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Nov 1112:31 PM
1 Variable Statistics Practice Problems WKS
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