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34 Cards in this Set
- Front
- Back
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THE "AVERAGE" IS ALSO KNOWN AS THE _______
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MEAN
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WHAT ARE THE 2 STEPS TO FIND THE MEAN?
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1. ADD ALL THE NUMBERS
2. DIVIDE BY THE NUMBER OF NUMBERS, (CALLED THE "n") |
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1. " ∑ " IS THE SYMBOL FOR THE "SUM" OF THE NUMBERS.
2. IF "n" STANDS FOR THE NUMBER OF NUMBERS, HOW WOULD YOU WRITE "THE MEAN = THE SUM DIVIDED BY THE NUMBER OF NUMBERS?" |
∑
Mean = --- n |
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PUT THESE NUMBERS IN RANK ORDER.
5, 9, 2, 1, 10, 3, 4, 5 |
10, 9, 5, 5, 4, 3, 2, 1
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PUT THESE IN NUMERICAL ORDER
5, 9, 2, 1, 10, 3, 4, 5 |
1, 2, 3, 4, 5, 5, 9, 10
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WHAT IS THE MODE FOR THIS SET OF NUMBERS?
5, 9, 2, 1, 10, 3, 4, 5 |
5
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WHAT IS THE MEDIAN OF A SET OF NUMBERS?
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IT IS THE MIDDLE NUMBER IN AN ORDERED SET OF THE NUMBERS.
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TO FIND THE MEDIAN, WHAT MUST BE DONE TO THE SET OF NUMBERS FIRST?
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PUT THEM IN EITHER RANK OR NUMERICAL ORDER.
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FIND THE MEDIAN:
2, 4, 4, 5, 8, 9, 11 |
5
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FIND THE MEDIAN. WHAT DO YOU DO IF THE NUMBER OF NUMBERS IS EVEN, AS IN THIS SET?
1, 3, 3, 4, 6, 6, 6, 8 |
FIND THE AVERAGE OF THE 2 NUMBERS IN THE MIDDLE. THE AVG OF 4 AND 6 IS 5, SO 5 IS THE MEDIAN.
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FIND THE MEDIAN
20, 27, 30, 44, 45, 53ED |
ADD 30+44 = 74.
DIVIDE 74 BY 2 = THE MEDIAN = 37 |
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WHAT IS THE RANGE OF THIS SET OF NUMBERS?
5, 8, 10, 12, 20, 23, 27, 28, 30 |
25
30 (THE HIGHEST SCORE) - 5 ( THE LOWEST SCORE) = 25 |
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WHAT IS THIS CALLED?
2│1 2 3 3 7 3│0 4 5 8 9 4│3 5 7 7 8 5│ 6│1 3 3 6 |
STEM AND LEAF PLOT
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ON THE FIRST LINE ON THE RIGHT SIDE, WHAT NUMBER DOES THE "7" REPRESENT?
2│1 2 3 3 7 3│0 4 5 8 9 4│3 5 7 7 8 5│ 6│1 3 3 6 4│3 MEANS 43 |
27
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WHAT NUMBERS ARE IN THE "STEM"
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2, 3, 4, 5, AND 6
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IN THE PLOT, WHAT DOES THE
"5│___" MEAN? |
THERE WERE NO NUMBERS IN THE 50'S.
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2│1 2 3 3 7
3│0 4 5 8 9 4│3 5 7 7 8 5│ 6│1 3 3 6 6│3 MEANS 6.3 WHAT DOES 3│0 MEAN? |
3.0
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IN A STEM AND LEAF PLOT, WHAT IS THE RIGHT SIDE CALLED?
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LEAF
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40│3 5 5 6 7
41│0 0 4 4 9 42│3 4 5 5 41│9 MEANS 419 WHAT WOULD “ 40| 3” MEAN? |
403
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IN THIS FREQUENCY TABLE, HOW MANY PEOPLE HAD LESS THAN 3 i-PODS? ("tttt" MEANS 5)
0│IIII 1│tttt II 2│ III 3│11 4│I 5│ |
14 PEOPLE
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IN A GRAPH, WHAT DOES A "SQUIGGLY" OR "BREAK" MEAN?
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SOME OF THE
DATA HAVE BEEN DELIBERATELY LEFT OUT. |
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WHERE IS THE MEDIAN FOUND IN A BOX PLOT?
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IN THE CENTER OF THE BOX
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DOTS AT THE FAR LEFT AND THE FAR RIGHT REPRESENT WHAT NUMBERS?
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THE LOWEST AND HIGHEST NUMBERS IN THE SET.
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A BOX PLOTS SHOWS 4 GROUPS OF DATA, EACH GROUP CALLED A ?
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QUARTILE
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IN A SCATTER PLOT, THE DRAWN “LINE OF BEST FIT” GOING UPWARD TO THE RIGHT MEANS ?
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A POSITIVE CORRELATION. IN OTHER WORDS, AS ONE NUMBER INCREASES, SO DOES THE OTHER.
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IN A SCATTERPLOT, A DRAWN “LINE OF BEST FIT”GOING DOWNWARD TO THE RIGHT MEANS?
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A NEGATIVE CORRELATION. AS ONE NUMBER INCREASES, THE OTHER NUMBER DECREASES. FOR EXAMPLE, AS THE WEIGHT OF A CAR INCREASES, THE NUMBER OF MILES PER GALLON OF GAS DECREASES.l
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IN A SCATTERPLOT WITH A POSITIVE CORRELATION, AS ONE VALUE GETS LARGER, WHAT HAPPENS TO THE OTHER VALUE?
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IT ALSO GETS LARGER
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IN A SCATTERPLOT WITH A NEGATIVE CORRELATION, AS ONE VALUE GETS LARGER, WHAT HAPPENS TO THE OTHER VALUE?
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IT GETS SMALLER.
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AN EXAMPLE OF A POSITIVE CORRELATION IN A SCATTERPLOT WOULD BE?
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EXAMPLE:
LllTHE MORE RAIN, THE MORE UMBRELLAS ARE USUALLY SOLD. |
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AN EXAMPLE OF A NEGATIVE CORRELATION IN A SCATTERPLOT IS?
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THE HEAVIER THE CAR, THE LESS MILES IT GETS PER GALLON.
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AN EXAMPLE OF NO CORRELATION IN A SCATTERPLOT WOULD BE?
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FOR EXAMPLE, THE TALLER THE PERSON, THE MORE FRECKLES.
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WHAT IS THE LINE OF BEST FIT?
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A STRAIGHT LINE DRAWN ON A SCATTERPLOT THAT COMES CLOSEST TO THE GREATEST NUMBER OF POINTS.
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WHAT IS THE "RANGE" OF THIS SET OF NUMBERS:
2,4,4,6,7,8,10,30? |
THE RANGE IS THE DIFFERENCE BETWEEN THE LARGEST AND THE SMALLEST NUMBERS IN THE SET, IN THIS CASE (30-2) = 28
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WHAT IS THE OUTLIER OF THIS SET OF NUMBERS? 2,4,4,6,7,8,10,30
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A NUMBER VERY MUCH SMALLER OR LARGER THAN THE OTHERS.
HERE, IT IS THE "30" WHICH IS MUCH LARGER THAN THE REST OF THE NUMBERS. |
