finding interquartile range from stem-leaf plot 2
TRANSCRIPT
![Page 1: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/1.jpg)
- Mr Kim
![Page 2: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/2.jpg)
Finding IQR for even number of scores
![Page 3: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/3.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
First, find the Median by crossing off the scores
![Page 5: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/5.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Now, start by crossing off the Smallest Number
![Page 6: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/6.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
2
Now, start by crossing off the Smallest Number
![Page 7: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/7.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 8: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/8.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Now cross off the Biggest Number
![Page 9: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/9.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 747
Now cross off the Biggest Number
![Page 10: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/10.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 11: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/11.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Cross off the scores in the directions shown
![Page 12: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/12.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“In”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“Out”
![Page 14: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/14.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“In”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Notice there is nothing in the 30’s
![Page 16: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/16.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
So skip to the next score
![Page 17: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/17.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“Out”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“In”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“Out”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“In”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“Out”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Stop here
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Always stop at “Out”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Put a line between the two scores
![Page 25: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/25.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Put a line between the two scores
![Page 26: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/26.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 27: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/27.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
12
11
![Page 28: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/28.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
So the Median (Q2) is in between 11 and 12
which is …
12
11
![Page 29: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/29.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
So the Median (Q2) is in between 11 and 12
which is 11.5
11
12
![Page 30: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/30.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
So the Median (Q2) is in between 11 and 12
which is 11.5
11+122
11
=11.5
12
![Page 31: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/31.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 32: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/32.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Now find the Lower and Upper Quartile by dividing the Stem-Leaf Plot in two
![Page 33: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/33.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
**It is very important to divide the sides properly
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
To do this, count the scores from the start
until you reach the Line
![Page 35: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/35.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 36: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/36.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 37: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/37.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 38: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/38.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 39: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/39.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 41: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/41.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Stop here!
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Now put a Border around the scores that you just
counted
![Page 43: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/43.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 44: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/44.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Now put a Border around the other side
![Page 45: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/45.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 46: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/46.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
This is how you correctlydivide the sides
![Page 47: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/47.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Now find the Median for both sides of the scores by crossing off each side at a
time
![Page 48: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/48.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
We will start with this side
![Page 49: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/49.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Remember the directions
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“In”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“Out”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“In”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
“Out”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Stop here!
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
![Page 56: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/56.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
43
![Page 57: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/57.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
So the Lower Quartile (Q1)is between 3 and 4
which is …
43
![Page 58: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/58.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
43
So the Lower Quartile (Q1)is between 3 and 4
which is 3.5
![Page 59: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/59.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
43
So the Lower Quartile (Q1)is between 3 and 4
which is 3.5
3+42
= 3.5
![Page 60: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/60.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
![Page 61: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/61.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
Now cross off the other side
![Page 62: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/62.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
Remember the directions
![Page 63: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/63.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
“In”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
“Out”
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0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
“In”
![Page 66: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/66.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
“Out”
![Page 67: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/67.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
Stop here!
![Page 68: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/68.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
![Page 69: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/69.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
2320
![Page 70: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/70.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
So the Upper Quartile (Q3)is between 20 and 23
which is …
2320
![Page 71: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/71.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
So the Upper Quartile (Q3)is between 20 and 23
which is 21.5
2320
![Page 72: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/72.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
So the Upper Quartile (Q3)is between 20 and 23
which is 21.5
2320
20+232
= 21.5
![Page 73: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/73.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
Upper Quartile: 21.5
![Page 74: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/74.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
So, the Interquartile Range is
Upper Quartile: 21.5
![Page 75: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/75.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
So, the Interquartile Range is
Upper Quartile: 21.5
![Page 76: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/76.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
Upper Quartile: 21.5
So, the Interquartile Range is21.5 –
![Page 77: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/77.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
Upper Quartile: 21.5
So, the Interquartile Range is21.5 –
![Page 78: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/78.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
Upper Quartile: 21.5
So, the Interquartile Range is21.5 – 3.5
![Page 79: Finding Interquartile Range from Stem-Leaf Plot 2](https://reader033.vdocuments.us/reader033/viewer/2022042518/55adb6551a28ab707f8b467e/html5/thumbnails/79.jpg)
0 2 2 3 4 6
1 1 2
2 0 0 3
3
4 5 7
Lower Quartile: 3.5
Upper Quartile: 21.5
So, the Interquartile Range is21.5 – 3.5 = 18
Our Final Answer!