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Published byMyra Week Modified about 1 year ago

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1 Press Ctrl-A ©G Dear 2010 – Not to be sold/Free to use Range and IQR With Stem-and-Leaf Stage 6 - Year 11$ Applied Mathematic (Preliminary General 1)

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2 Interquartile Range = Q3 – Q1 End of Slide Stem Leaf 01270127 1011510115 222357222357 30257893025789 433456433456 5001250012 123 4567 89101112 131415161718 1920212223 24252627 First find median. There are 27 scores. Median = 14 th score. (The middle score.) Median = 32.

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3 Interquartile Range = Q3 – Q1 End of Slide Stem Leaf 01270127 1011510115 222357222357 30257893025789 433456433456 5001250012 123 456 7 89101112 14 Now find Q1. There are 13 scores in the lower half. Q1 = 7 th score. (The middle score.) Q1 = 15. 13

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4 Interquartile Range = Q3 – Q1 End of Slide Stem Leaf 01270127 1011510115 222357222357 30257893025789 433456433456 5001250012 1 234 5 6 789 101112 14 Next find Q3. There are 13 scores in the upper half. Q3 = (14+7) st score. (The middle score.) Q3 = 44. 13 7 21 st score 15161718 192021

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5 Interquartile Range = Q3 – Q1 End of Slide Stem Leaf 01270127 1011510115 222357222357 30257893025789 433456433456 5001250012 14 IQR = 7 21 44- 15 = 29 Range =52- 1 = 51

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6 Interquartile Range = Q3 – Q1 End of Show Stem Leaf 03467990346799 11351135 2013620136 302349302349 43454345 5252 = (21+23)÷2 = 22 Q1 = = 9 Q3 = = 34 IQR = 34 - 9= 25 = 52= 49 Median = Range = - 3

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