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Question. Take away six matches to leave 10. Question. Take away four matchsticks to leave exactly four small equilateral triangles. Question. Can you move two matches to make 7 squares. Question. Take away two matches to leave two squares. Question.

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Question

Question

Take away six matches to leave 10


Question

Question

  • Take away four matchsticks to leave exactly four

  • small equilateral triangles.


Question

Question

  • Can you move two matches to make 7 squares.


Question

Question

  • Take away two matches to leave two squares.


Question

Question

  • Arrange four matches and a coin as shown below

  • to represent a glass containing a cherry.

By moving two matches only, remove the cherry

from the glass, but leave the glass intact.


Question

Question

  • Move one match to leave a square

Square


Question

Problem Number 5

How many moves to get the cherry outside of the fancy glass?


Outliers

Outliers

To be able to identify an outlier using the Inter Quartile Range


What is an outlier
What is an outlier?

  • In a set of numbers, a number that is much LARGER or much SMALLER than the rest of the numbers is called an Outlier.


Say we have the following data 1 2 5 5 7 8 10 11 11 12 15 20
Say we have the following data:1,2,5,5,7,8,10,11,11,12,15,20

  • Find the median first. It’s the middle point.

  • Then find the quartiles, Q1 and Q3. They are the middles of the lower and upper half, respectively.

  • The last thing to do is determine whether there are outliers using the 1.5*IQR Rule



Min q 1 q 3 max 1 2 5 5 7 8 10 11 12 12 18 25
min Q1 Q3 max 1,2,5,5,7,8,10,11,12,12,18,25

M

1

5

9

12

18

25

-5.5

22.5

1.5IQR

IQR = 12 – 5 = 7

1.5IQR

5 - 1.5 * 7 = -5.5

12 + 1.5 * 7 = 22.5

25 is considered an outlier and will be a point in a boxplot and the ‘whisker’ ends at the last non-outlier data point.


Do any of these sets of data have outliers
Do any of these sets of data have outliers

  • 21, 27, 31, 35, 29, 42, 45, 50, 54, 61, 69

  • 108, 134, 141, 152, 153, 157, 159, 160, 160, 160, 161, 162, 167, 169, 173

  • 4, 4, 4, 5, 5, 5, 7, 9, 11, 13, 15, 33

  • 6, 7, 7, 8, 8, 9, 11, 12, 13, 15, 18

  • 4, 4, 7, 7, 8, 8, 8, 9, 9, 11, 13

  • HINT – Use the IQR