![Page 1: UNIT 9 Test Review - Mrs. Oakes' Magical Mathoakesmath.weebly.com/uploads/1/4/0/9/14096721/unit_9_review.pdf · UNIT 9 Test Review . OBJECCTIVES •Students will calculate central](https://reader030.vdocuments.mx/reader030/viewer/2022040410/5ecb7e913ff08f5d3b55e235/html5/thumbnails/1.jpg)
HOMEWORK:
Study
Study
Study
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Test Tomorrow!!!!
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UNIT 9 Test Review
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OBJECCTIVES
• Students will calculate central tendency
• Students will interpret data displayed in graphs
• Students will identify independent and dependent variables
• Students will determine the type of correlation
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Keep Track Of Your Points!
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Mean, Median, Mode and Range!
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MEDIAN: THE MIDDLE!
• The middle number in the data set!
• If there is an even number, find the average of the two in the middle.
• 1 2 3 5 5 6
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How Many Points Do You Wager?
• Find the MEAN, MEDIAN, MODE and RANGE of this set of data!
• 19 13 15 13 12 11 9 18 18 13 17
Mean_________________ Median________________ Mode_________________ Range_________________
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BAR GRAPH
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200 Points
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Double bar graph
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100 Points
Which fruit tree had the biggest increase in growth from year 1 to year 2
A. Grapefruit
B. Apples
C. Peaches
D. Limes
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Histogram
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200 Points
• The highest interval of songs was played at what frequency?
A. 17 B. 3
C. 12
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Scatter Plots A graph of plotted points that show the relationship
between two sets of data.
In this example, each dot represents one
person's weight versus their height.
As a person’s weight
increases, so does their height
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300 points
• What relationship is shown on this scatter plot?
A. The more pancakes your make, the more batter you will have
B. The more pancakes you make, the less batter you will have?
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Correlations:
• Positive- As one variable increases, so does the other (data moves up & right)
• Negative- As one variable increases, the other decreases (data moves down & right)
• No Correlation- no trend or pattern (dots all over)
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Name That Correlation 100 points
A. Positive
B. Negative
C. No correlation
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Name That Correlation 200 points
A. Positive
B. Negative
C. No correlation
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Independent vs. Dependent Variables
Independent Variable = represents a value you control or it affects another
Dependent Variable = a variable whose value changes
with changes in the independent variable
The longer you ride your bike, the farther you will travel.
VARIABLES: Time riding and distance traveled
INDEPENDENT VARIABLE: The time spent riding the bike (we can control that)
DEPENDENT VARIABLE: The distance traveled because it
depends on how long we ride our bike
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100 Points
• The harder I exercise, the more tired I get.
What is my independent variable?
A. How hard I exercise
B. How tired I get
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200 Points
The faster you run, the less time it will take to get home.
VARIABLES: Running speed and time to get home
Which is the dependent variable? (The one that changes)
A) Running Speed B) Time to get home
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Line Plot
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Line Graph
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100 Points
How much weight did the cat gain between 1 year and 5 years of age?
A. About 3 lbs.
B. About 1 lb.
C. About 2 lbs.
D. About 10 lbs.
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200 Points
A. 7
B. 5
C. 3
D. 4
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300 Points • How many degrees did the temperature
increase from day 3 to day 6?
A. 10 degrees
B. 17 degrees
C. 15 degrees
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How many points did you earn?
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QUESTIONS?
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HOMEWORK:
Study
Study
Study