Free Printable Statistics - Practice Revision

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Worksheets

Statistics - Practice Revision

Total questions: 73

Worksheet time: 2hrs 14mins

Name

Class

Date

1.

The whole group of people/objects in a group that you want to survey is called the...

a)

Population

b)

Sample

c)

Variable

d)

Data

2.

What is the mean of this set of data?

2, 15, 7

a)

24

b)

3

c)

6

d)

8

3.

What is the range in gas mileage for cars?

a)

2

b)

3

c)

4

d)

6

4.

What is the range of the data shown?

a)

85

b)

90

c)

80

d)

70

5.

A ___ is a large group that includes everything being studied.

a)

Sample

b)

Stratified Sampling Method

c)

Population

d)

Voluntary-Response

6.

A recent survey of 800 seventh graders from across the state shows 4 out of 10 like to play paper football. How many students said they like to play paper football?

a)

40 students

b)

200 students

c)

320 students

d)

8,000 students

7.

Zoie completes a report by asking 70 students across campus. She found that 48% of CTMS students do not wash their hands after using the bathroom. What is the sample size?

a)

48

b)

100

c)

70

d)

CTMS students

8.

The middle number, once data is made ordinal

a)

Mean

b)

Mode

c)

Median

d)

Range

9.

The average of all data sets is more formally known as the...

a)

mean

b)

median

c)

range

d)

mode

10.

An error that occurs from the respondents all sharing the same characteristic is known as a...

a)

Sampling Error

b)

Stratified Error

c)

Non-Response Error

d)

Sharing Error

11.

The number that falls in the middle of all data is referred as the...

a)

mean

b)

median

c)

range

d)

mode

12.

A survey that seeks information from the entire population is known as a...

a)

Sample

b)

Census

c)

Survey Group

13.

An error that comes up when not getting any responses is called a...

a)

No Respond Error

b)

Ghosted Error

c)

Non-Response Error

d)

Silent Error

14.

An error that occurs when not enough of the population is sampled is called a....

a)

Non-Response Error

b)

Sampling Error

c)

Coverage Error

d)

Simple Error

15.

What is the formula to calculate the mean of a data set?

4 lines

16.

This type of data is ________ skewed

a)

Positively

b)

Negatively

c)

Symetrically

17.

This type of data is ________ skewed.

a)

Positively

b)

Negatively

c)

Symetrically

18.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

19.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

20.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

21.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

22.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

23.

Which of the following best describes the correlation shown on the graph?

a)

negative correlation

b)

positive correlation

c)

no correlation

24.

Which correlation coefficient (r) best represents the graph?

a)

r = -1

b)

r = 0

c)

r = 1.4

d)

r = 1

25.

Which correlation coefficient (r) best represents the graph?

a)

r = -0.95

b)

r = 0

c)

r = -1.4

d)

r = 1

26.

Which correlation coefficient (r) best represents the graph?

a)

r = -0.95

b)

r = 0

c)

r = 2

d)

r = 1

27.

Which correlation coefficient (r) best represents the graph?

a)

r = -0.95

b)

r = 0

c)

r = 0.85

d)

r = 1.1

28.

Which correlation coefficient (r) best represents the graph?

a)

r = -0.95

b)

r = 0

c)

r = 0.85

d)

r = 1.1

29.

Describe the correlation, if the correlation coefficient is r = -0.26

a)

Positive, weak

b)

Negative, weak

c)

Positive, strong

d)

Negative, strong

30.

Describe the correlation. r = 0.3

a)

Strong, positive

b)

Weak, positive

c)

Strong, negative

d)

Weak, negative

31.

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

32.

If Joe worked 30 hours, how much is he expected to earn?

a)

$600

b)

$200

c)

$1000

d)

$800

33.

Make a prediction for a resting heart rate after 6 hours of exercise a week.

a)

6

b)

50

c)

55

d)

59

34.

Estimate the correlation coefficient for this scatterplot.

a)

A) r = 1.2

b)

B) r = 0.89

c)

C)r = 0

d)

D) r = -0.89

35.

As x increases, y increases

a)

A) correlation coefficient

b)

B) causation

c)

C) positive correlation

d)

D) negative correlation

36.

As x increases, y decreases.

a)

A) no correlation

b)

B) negative correlation

c)

C) correlation coefficient

d)

D) positive correlation

37.

Make predictions based on values inside the data points

a)

Interpolation

b)

Extrapolation

c)

Correlations Coefficient

d)

Residual

38.

Make predictions based on values outside the data points

a)

Interpolation

b)

Extrapolation

c)

Correlations Coefficient

d)

Residual

39.

The measure of the strength and direction of a linear relationship

a)

Interpolation

b)

Extrapolation

c)

Correlations Coefficient

d)

Residual

40.

Approximate the daily sugar intake for the participant who consumed 3 soft drinks per week

a)

120g

b)

110g

c)

130g

d)

90g

41.

What is the minimum value?

a)

64

b)

58

c)

66

d)

60

42.

What is the maximum value?

a)

58

b)

66

c)

64

d)

60

43.

What data value is the upper quartile (Q3)?

a)

64

b)

62

c)

66

d)

58

44.

What value is the lower quartile?

a)

66

b)

58

c)

60

d)

64

45.

What is the median?

a)

62

b)

58

c)

66

d)

60

46.

Which city has a higher median?

a)

Millersburg

b)

Arcadia

47.

Which best represents the Interquartile Range

a)

15

b)

93

c)

85

d)

78

48.

There would be a strong causality between the number of petrol stations in a town and maximum speed the car can reach.

a)

True

b)

False

49.

There would be a strong causality between number of burgers eaten and score on a maths test.

a)

True

b)

False

50.

What is the range of the set of data?

a)

70

b)

65

c)

80

d)

55

51.

To create your box plot,

you must find your

"___ number summary".

a)

complete

b)

three

c)

five

d)

quartile

52.

What are the MINIMUM and MAXIMUM values?

a)

3 and 18

b)

4 and 15

c)

10.5

d)

6 and 13

53.

What is ALWAYS your first step when given a set of data?

a)

Put the numbers in order from greatest to least.

b)

Put the numbers in order from least to greatest.

c)

Find the median.

d)

Find the quartiles.

54.

What does point C on the box plot represent?

a)

First Quartile

b)

Median

c)

Third Quartile

d)

Mean

55.

What do points B and D represent on the box plot?

a)

Mean and Mode

b)

Mean and Median

c)

Least and Greatest Value

d)

First and Third Quartiles

56.

What do points A and E represent on the box plot?

a)

Mean and Mode

b)

Mean and Median

c)

Least and Greatest Value

d)

First and Third Quartiles

57.

Which city has a lower IQR?

a)

City A

b)

City B

58.

For Africa, what percentage of Leopards have a weight less than 80kg?

a)

25%

b)

50%

c)

75%

d)

100%

59.

Which leopard population has the highest minimum weight?

a)

Africa

b)

Asia

60.

A leopard has a weight of 90kg. Is likely to be an Asian or African leopard?

a)

Asian

b)

African

61.

For Asia, what percentage of Leopards have a weight less than 80kg?

a)

25%

b)

50%

c)

75%

d)

100%

62.

If r=0, there is a strong correlation.

a)

True

b)

False

63.

r²= .83

a)

My data is very accurate. We have a 17% uncertainty.

b)

My data is 17% correct.

c)

My data is relatively strong. I have 83% accuracy.

d)

My data is very accurate. I have 17% accuracy.

64.

r²= .46

a)

My data is very accurate. We have a 46% uncertainty.

b)

My data is 54% correct.

c)

My data is relatively strong. I have 54% accuracy.

d)

My data is flawed. I have 54% uncertainty.

65.

r²represents:

a)

Coefficient of Delegation

b)

Correlation Coefficient

c)

Correlation of Determination

d)

Coefficient of Determination

66.

True or False?

"Correlation is not causation" means that just because two things correlate does not necessarily mean that one causes the other.

a)

True

b)

False

67.

There would be a strong causality between distance travelled to work and amount spent on fuel in a week

a)

True

b)

False

68.

There would be a strong causality between the temperature and number of people at the beach

a)

True

b)

False

69.

Is r = -0.87 strong, moderate, or weak?

a)

strong

b)

moderate

c)

weak

70.

What letter do we use to represent correlation coefficient?

a)

c

b)

r

c)

p

d)

h

71.

The scatter plot below shows the number of books read by students in Mr Hollands' English class and their final grades. Which statement represents the best description about the line of best fit?

a)

The more books students read, the lower their English grade.

b)

The more books students read, the higher their English grade.

c)

The fewer books students read, the higher their English grade.

d)

No relationship exists between the number of books students read and their English grades.

72.

Data is analyzed comparing hours studied and grades. It is determined that the correlation coefficient is 0.92. What does this mean?

a)

There is a strong positive correlation between studying and grades.

b)

There is a strong negative correlation between studying and grades.

c)

There is a weak positive correlation between studying and grades.

d)

There is a weak negative correlation between studying and grades.

73.

The linear regression equation is y = 61.93x - 1.79. Use the equation to predict how far this person will travel after 10 hours of driving.

a)

10 miles

b)

617.5 miles

c)

0.19 miles

d)

500 miles

100 %

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