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Unit 9 Study Guide: Statistics

Total questions: 30

Worksheet time: 3580secs

Name
Class
Date
1.
What type of association does this graph have?
a)
positive 
b)
negative
c)
none
d)
all of the above
2.
As the age of the car increases, its value decreases. Which scatterplot represents this relationship?
a)
A
b)
B
c)
C
d)
D
3.
What is the correlation?
a)
Negative correlation
b)
No correlation
c)
Positive correlation
d)
All of the above
4.
Which box and whisker plot has the highest median?
a)
Top plot
b)
Bottom plot
5.
Which box and whisker plot has the smallest lower quartile?
a)
Top plot
b)
Bottom plot
6.
Which box and whisker plot shows more "spread out" data?
a)
Top plot
b)
Bottom plot
7.
21. How many students are represented by the histogram?  
a)
Cannot be determined
b)
9
c)
31
d)
35
8.
Which interval has the greatest number of employees?
a)
11-21
b)
33-43
c)
77-87
d)
44-54
9.
Describe the histogram:
a)
Left Skewed
b)
Symmetrical
c)
Right Skewed
d)
Uniform
10.
How many students have more than 1,000 songs on their MP3 player?
a)
5
b)
16
c)
10
d)
4
11.
What percent of the total population surveyed were electrical engineers that like math?
a)
33.9%
b)
48.6%
c)
16.5%
d)
21.7%
12.
What percent of people who play an instrument do not play a team sport?
a)
80%
b)
27.2%
c)
40%
d)
90.1%
13.
What percent of people who bought no food purchased water?
a)
14.3%
b)
33.3%
c)
5%
d)
41.1%
14.
What percentage of men purchased a sports car?
a)
46.4%
b)
65%
c)
16.25%
d)
71.4%
15.
Which example shows CAUSATION?
a)
High social media usage and reduced grades.
b)
Car ran out of gas and being stranded on the side of the road.
c)
Recess time and classroom behavior in elementary school
16.
Which example shows CORRELATION?
a)
I ate a hananero pepper and my mouth feels like it is on fire.
b)
Music lessons and brain development.
c)
I stepped on a spider and it died.
17.
Which example shows CAUSATION?
a)
Stress level and desire for chocolate.
b)
Eating more butter and increased divorce rates.
c)
It started raining and the baseball game was delayed.
18.
Which example shows CORRELATION?
a)
I put water in the freezer and now I have ice.
b)
The alarm clock went off and I woke up.
c)
Temperature and the amount of people at the beach.
19.
Which example shows CAUSATION?
a)
Being happy and being a better student.
b)
An insect ate poison and it died.
20.

Which example shows a CORRELATION?

a)

It rained and the ground is wet.

b)

Ice cream sales increase as sunglasses sales increases.

21.

Find the median.

12, 5, 9, 18, 22, 25, 5

a)

9

b)

8

c)

12

d)

18

22.
Find the range.
12, 5, 9, 18, 22, 25, 5
a)
20
b)
15
c)
22
d)
18
23.
Find the mean.
90, 100, 95, 85, 60, 80
a)
85
b)
84
c)
86
d)
90
24.

find the lower quartile (Q1) of the following set of scores: 12, 9, 4, 6, 5, 8, 9, 4, 10, 2

a)

10

b)

4

c)

9

d)

6

25.
What value is the lower quartile (Q1)?
a)
66
b)
58
c)
60
d)
64
26.
What data value is the upper quartile (Q3)?
a)
64
b)
62
c)
66
d)
58
27.
The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 
a)
12 chapters
b)
15 chapters
c)
18 chapters
d)
21 chapters
28.

What is the equation of the line of best fit?

a)

y = -25x + 170

b)

y = -5/8x + 170

c)

y = 25x + 170

d)

y = 5/8x + 170

29.

Students in a group of chess teams submitted data about hours of team practice and the number of matches the team won. The graph shows the results of the data. Based on the linear regressions equation y = 3.14x + 3.52, if a team practices 4.5 hours per week next year, which is the best prediction of the number of chess matches a team could expect to win?

a)

about 24

b)

about 12

c)

about 8

d)

about 18

30.

The equation of the trend line

is y= 1/2x +1

How many laps can a bicycle

make around the park in

23 minutes?

a)

44 laps

b)

12 1/2 laps

c)

23 laps

d)

55 laps

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