Quiz about Stats: Chapter 1 Test Review

Question 1

Categorical or Quantitative?
Years of schooling completed

Accepted Answer

Quantitative

Answer

Categorical

Question 2

Categorical or Quantitative?
College Major

Accepted Answer

Categorical

Answer

Quantitative

Question 3

Age of each student in Algebra class

Accepted Answer

Quantitative

Answer

Categorical

Question 4

When using IQR to find outliers, which formula will identify the upper limit?

Accepted Answer

Q3 + 1.5(IQR)

Answer

Q3 - 1.5(IQR)

Answer

Q1 + 1.5(IQR)

Answer

Q1 - 1.5(IQR)

Question 5

When using IQR to find outliers, which formula will identify the lower limit?

Accepted Answer

Q1 - 1.5(IQR)

Answer

Q3 - 1.5(IQR)

Answer

Q1 + 1.5(IQR)

Answer

Q3 + 1.5(IQR)

Question 6

Which of the following best describes the process of finding the interquartile range for a set of data?

Accepted Answer

Subtract Q1 from Q3.

Answer

Add the biggest and smallest numbers.

Answer

Place the numbers in order from least to greatest and find the middle.

Answer

Find the difference between the maximum and the minimum.

Question 7

Identify the outlier for the given data?

23, 34, 27, 12, 30, 26, 28, 31, 34

Accepted Answer

12

Answer

23

Answer

34

Answer

None

Question 8

Find the outlier of the data set.

15, 20, 18, 35, 17, 35, 13

Accepted Answer

None

Answer

35

Answer

13

Answer

15

Question 9

Which box and whisker plot has the highest median?

Accepted Answer

Top plot

Answer

Bottom plot

Question 10

What is the range of the data shown?

Accepted Answer

70

Answer

85

Answer

90

Answer

80

Question 11

Question 11.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 12

Question 12.

Accepted Answer

G

Answer

F

Answer

H

Answer

J

Question 13

Which is a true statement based on the box plots above

Accepted Answer

The data for Team B have the greater interquartile range.

Answer

The data for Team B have the greater range.

Answer

The data for Team A are more symmetric.

Answer

The data for Team A have the greater median.

Question 14

Which is a true statement based on the dot plots above?

Accepted Answer

Set B has the greater range

Answer

Set B has the greater median

Answer

Set B has the greater mean

Answer

Set A is less symmetric that Set B

Question 15

Compare the centers and spreads.

Accepted Answer

Math has a higher median (center) and a wider spread.

Answer

Math has a higher median (center) and a smaller spread.

Answer

Math has a lower median (center) and a smaller spread.

Answer

Math has a lower median (center) and a wider spread.

Question 16

Which dot plot has the greatest variability?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 17

Is the Cars dot plot skewed left or right?

Accepted Answer

left

Answer

right

Question 18

What is the shape of the distribution?

Accepted Answer

The distribution is approximately symmetrical.

Answer

The distribution is skewed to the right.

Answer

The distribution is skewed to the left.

Answer

The distribution is approximately uniform.

Question 19

What was the day with the least amount of cars sold?

Accepted Answer

Thursday

Answer

Monday

Answer

Tuesday

Answer

Wednesday

Question 20

How many students had more than 6 candy bars?

Accepted Answer

3

Answer

5

Answer

2

Answer

1

Question 21

What is the Maximum data item on this stem and leaf plot?

Accepted Answer

94%

Answer

56%

Answer

88%

Answer

8122348%

Question 22

How many students scored more than 80%?

Accepted Answer

13

Answer

10

Answer

7

Answer

15

Question 23

What is wrong with this stem and leaf diagram?

Accepted Answer

It's missing a key.

Answer

Nothing- it's all correct.

Answer

The order.

Answer

The title.

Question 24

Tom asked people in a survey how much money they could find under their sofa cushions. The stem-and-leaf plot shows the amounts of money. What is the least amount of money a person said they could find?

Accepted Answer

45 cents

Answer

4 cents

Answer

46 cents

Answer

456 cents

Question 25

Which statement about the data is true?

Accepted Answer

Two people each found 70 cents.

Answer

Two people each found 7 cents.

Answer

One person found 56 cents.

Answer

Eight people found 37 cents.

Question 26

What is the median of the data shown?

Accepted Answer

9.5

Answer

9

Answer

10

Answer

There is no median

Question 27

What is the median of the data shown?

Accepted Answer

82

Answer

81.5

Answer

83

Answer

80.3

Question 28

What type of graph is this?

Accepted Answer

Histogram

Answer

Bar Graph

Answer

Line Plot

Question 29

Which interval has 400 employees?

Accepted Answer

33-43

Answer

0-10

Answer

77-87

Answer

66-76

Question 30

Which interval has the greatest number of employees?

Accepted Answer

44-54

Answer

11-21

Answer

33-43

Answer

77-87

Question 31

How many employees have a salary less than $22,000?

Accepted Answer

350

Answer

50

Answer

0

Answer

10

Question 32

The graph shows the results of a survey to determine student's favorite pets. Why is this graph misleading?

Accepted Answer

The percents do not add up to 100

Answer

The slices are the wrong color

Answer

The slices are not the correct size

Answer

Not misleading

Question 33

What is misleading about this graph?
**choose the best answer

Accepted Answer

The y-axis does not start at zero, so it makes the democrats look much higher than the other two parties.

Answer

Nothing is misleading about this graph.

Answer

The democrats are too high.

Question 34

Alden wanted to impress his parents by showing the rapid increase in his score on 5 tests. Which graph should he use to impress them?

Accepted Answer

Graph 2

Answer

Graph 1

Answer

Neither

Answer

Both

Question 35

What is wrong with this graph?

Accepted Answer

The basketball ticket prices in 2001 were approximately 2 times as much as 1991, yet the size of the basketballs are about 4 times as big.

Answer

Not enough information.

Answer

y axis scale is not uniform

Question 36

What type of shape distribution would you say this graph has?

Accepted Answer

Right Skewed

Answer

Approximately Symmetrical

Answer

Left Skewed

Answer

No skew

Question 37

What type of shape distribution would you say this graph has?

Accepted Answer

Approximately Symmetrical

Answer

Right Skewed

Answer

Left Skewed

Answer

Evenly spread out

Question 38

What is the best description of the given data?

Accepted Answer

mean is lower than median

Answer

Mode = Median

Answer

mean is higher than median

Answer

mean =median

Question 39

What is the shape of the data for Lucy's Steakhouse?

Accepted Answer

Skewed Right

Answer

Symmetrical

Answer

Skewed Left

Question 40

Which of the following best describes the shape of the distribution?

Accepted Answer

SKEWED LEFT

Answer

SKEWED RIGHT

Answer

UNIFORM

Answer

SYMMETRICAL

Question 41

How would you describe this data?

Accepted Answer

mean is higher than median

Answer

mean=median

Answer

mean is lower than median

Answer

mode =median

Question 42

Which of the following lists all parts of the five number summary?

Accepted Answer

Minimum, Quartile 1, Median, Quartile 3, and Maximum

Answer

Mean, Median, Mode, Range, and Total

Answer

Smallest, Q1, Q2, Q3, and Q4

Answer

Minimum, Maximum, Range, Mean, and Median

Question 43

Find the Q1 (median of the lower half) of the following numbers: 84, 88, 72, 74, 98, 16, 94

Accepted Answer

72

Answer

88

Answer

94

Answer

There is no Lower Quartile.

Question 44

Find the Q3 (median of upper half) of the following numbers: 84, 88, 72, 74, 98, 16, 94

Accepted Answer

94

Answer

72

Answer

88

Answer

There is no Upper Quartile.

Question 45

Find the Median (Q2) of the following numbers: 84, 88, 72, 74, 98, 16, 94

Accepted Answer

84

Answer

16

Answer

98

Answer

There is no median.

Question 46

When finding median and the middle has two numbers instead of one, what do you do?

Accepted Answer

Take the average

Answer

Take the higher number

Answer

Take the lower number

Answer

Take both

Question 47

What data value is the upper quartile (Q3)?

Accepted Answer

64

Answer

62

Answer

66

Answer

58

Question 48

What is the median?

Accepted Answer

35

Answer

30

Answer

25

Answer

50

Question 49

50% of the Cruisers attended between 7 and 16 car shows.  True or False?

Accepted Answer

False

Answer

True

Question 50

Which city has a minimum value that is lower?

Accepted Answer

Millersburg

Answer

Arcandia

Question 51

Which car club has the higher median?

Accepted Answer

Car Hops

Answer

Cruisers

Question 52

What is the IQR of the Car Hops?

Accepted Answer

4

Answer

6

Question 53

The two measures of center we've study this unit are...

Accepted Answer

Median

Accepted Answer

Mean

Answer

Interquartile Range

Answer

Mean Absolute Deviation

Answer

Standard Deviation

Question 54

Interquartile Range or IQR is a measure of variability and helps determine the spread of the data.

Accepted Answer

True

Answer

False

Question 55

If our data set is skewed to the right or left we would measure the center by calculating the...

Accepted Answer

Median

Answer

Mode

Answer

Mean

Answer

Range

Question 56

The mean gets pulled away from the center of data or the typical value when the data is skewed to the right or left.

Accepted Answer

True

Answer

False

Question 57

If we use the mean to measure the typical value or center of the data, we would use the _________ to measure the variability.

Accepted Answer

Standard Deviation

Answer

IQR

Answer

Median

Answer

Mean

Question 58

If we use the median to measure the typical value or center of the data, we would use the _________ to measure the variability.

Accepted Answer

IQR or Interquartile Range

Answer

Mode

Answer

MAD

Answer

Standard Deviation

Question 59

A histogram shows each value in a data set.

Accepted Answer

False

Answer

True

Question 60

A box plot divides the data into quarters or 25% increments.

Accepted Answer

True

Answer

False

Stats: Chapter 1 Test Review

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