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LONG TEST 2 MAKEUP

Total questions: 103

Worksheet time: 5hrs 46mins

Name
Class
Date
1.

What is the total area under the normal curve in a standard normal distribution?

a)

1

b)

2

c)

3

d)

4

2.

What is the total area under the normal curve in a standard normal distribution?

a)

1

b)

2

c)

3

d)

4

3.

Where can we locate the mean in the normal curve?

a)

to the left portion

b)

to the right portion

c)

at the center

d)

on the z - axis

4.
A z-score tells you...
a)
the standard deviation of a sampling distribution.
b)
the original raw score on which it is based.
c)
if the distribution it comes from is normal.
d)
how many standard deviations away from the mean a score lies.
5.
Find the area under the standard normal curve to the right of z = -2.67.
a)
0.0869
b)
0.9962
c)
0.0008
d)
0.1234
6.
Find the area under the normal distribution curve to the left of 
Z=0.27.
a)
0.3936
b)
0.3897
c)
0.6064
d)
0.4892
7.
Find the area under the normal distribution curve between a z=-1.26 and z=.57. 
a)
0.0047
b)
0.9204
c)
0.6119
d)
0.4981
8.
Find the area of the shaded region if the z-score is 0.75
a)
0.2266
b)
0.7734
c)
0.758
d)
0.242
9.

Which of the following graphs shows a normal curve?

a)
b)
c)
d)
10.
This data is normally distributed.  What percent of the data is in the shaded region?
a)
68%
b)
95%
c)
99.7%
d)
50%
11.
This data is normally distributed.  What percent of the data is in the shaded region?
a)
68%
b)
95%
c)
99.7%
d)
50%
12.
This data is normally distributed.  What percent of the data is in the shaded region?
a)
68%
b)
95%
c)
99.7%
d)
50%
13.
This data is normally distributed.  What percent of the data is in the shaded region?
a)
68%
b)

32%

c)
95%
d)
50%
14.

Find the area of the shaded region

a)

0.8686

b)

0.9332

c)

0.0645

d)

0.1314

15.

Find the area under the normal curve between z=0.5 and z=1.5

a)

0.6247

b)

0.2417

c)

0.6915

d)

0.3084

16.

Given the illustration. What operation to use in order to get the area under the normal curve?

a)

multiplication

b)

division

c)

addition

d)

subtraction

17.

Which illustration best described the value under the normal curve between z= -0.75 and z=1.5

a)
b)
c)
d)
18.

Fin the area under the normal curve to left of z=1.5

a)

0.0668

b)

0.4332

c)

0.9332

d)

0.9323

19.

Solve the area under the normal curve given to the right of z=0.75

4 lines
20.

Determine the area under the standard normal curve between z=0 and z=1.34

a)

0.4098

b)

0.4099

c)

0.4100

d)

0.4097

21.

Determine the area under the standard normal curve between z=0 and z=1.32

a)

0.4064

b)

0.4065

c)

0.4066

d)

0.4067

22.

Determine the area under the normal curve to the right of z=0.35

a)

0.3635

b)

0.3634

c)

0.3633

d)

0.3632

23.

Determine the area under the normal curve to the left of z=0.45

a)

0.6736

b)

0.6837

c)

0.6836

d)

0.6737

24.

Determine the area under the normal curve between z=-0.25 and z=1.17

a)

0.6777

b)

0.3777

c)

0.4777

d)

0.5777

25.

It is a single value that attempts to describe a set of data by identifying the central position within the set of data

a)

Measures of Central Tendency

b)

Correlation

c)

Regression

d)

Kortosis

26.

It is the sum of measures divided by the number of measures in a variable.

a)

Mode

b)

Variance

c)

Median

d)

Mean

27.

It is the value with the greatest frequency

a)

Mode

b)

Variance

c)

Median

d)

Mean

28.

It is the middle entry or term in a set of data arranged in either increasing or decreasing order.

a)

Mode

b)

Variance

c)

Median

d)

Mean

29.

The number of books borrowed in the library from Monday to Friday last week were 58, 60, 54, 35 and 97 respectively. Find the median

a)

60

b)

58

c)

54

d)

35

30.

The number of books borrowed in the library from Monday to Friday last week were 58, 60, 54, 35 and 97 respectively. Find the mean

a)

60.80

b)

60.08

c)

80.60

d)

80.06

31.

The number of books borrowed in the library from Monday to Friday last week were 58, 60, 54, 35 and 97 respectively. Find the mode

a)

58

b)

60

c)

35

d)

No Mode

32.

Cora's quizzes for the second quarter are 8, 7, 6, 10, 9, 5, 9, 6, 10 and 7. Find the median

a)

7

b)

7.5

c)

8

d)

9

33.

Cora's quizzes for the second quarter are 8, 7, 6, 10, 9, 5, 9, 6, 10 and 7. Find the mean

a)

7.5

b)

7.6

c)

7.7

d)

7.8

34.

Find the mode in the following data 6, 7, 6, 7, 8, 7, 6, 6 9, 10, 10, 7, 7

a)

7

b)

6

c)

8

d)

9

35.
The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below: 
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?
a)
5
b)
6
c)
9
d)
11
36.
A data set can have more than one _______
a)
Median
b)
Mode
c)
Mean
d)
Midrange
37.
In the last 5 games, Kevin Durant scored 22, 22, 18, 12, and 21 points. What is Durant's Mean (Average) score per game?
a)
 19 points per game
b)
95 points per game
c)
18.6 points per game
d)
22 points per game
38.
What do you do if there are two numbers in "the middle" when you are finding the median?
a)
Pick your favorite number
b)
Add the two numbers in the middle & then divide by two.
c)
They are both the median
d)
None of the above
39.
To find the average of a set of numbers, add up all the items and divide by...
a)
2.
b)
The smallest number
c)
The largest number
d)
The number of items in the set.
40.

Dr. Dre is a dentist. He needs to report on the average (Mean) number of cavities that his patients have.

1, 0, 1, 5, 0, 3, 4. What is the average number of cavities?

a)

14

b)

2

c)

7

d)

1

41.

What is the median?

a)

The number in the middle when the numbers are in order from least to greatest.

b)

The difference between the largest and smallest number.

c)

The average

d)

The number that appears most often.

42.

What is the range?

a)

The sum of the largest and smallest number

b)

The number in the middle

c)

The difference between the largest and smallest number

d)

The number that appears most often

43.
What is the mode?
a)
The average
b)
The number that appears most often.
c)
The largest number - the smallest number
d)
The number in the middle.
44.
When you are trying to find the MEDIAN of a set of data and 2 numbers are left in the middle after putting them in order from least to greatest, what do you do?
a)
List both of the numbers as the Median.
b)
Add the two numbers together and divide by 2.
c)
Pick the one that you want.
d)
Subtract the two numbers.
45.
Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?
a)
193
b)
127
c)
60
d)
66
46.

The number of miles that Jenna cycled each week for a 7-week period is shown:

36, 42, 28, 52, 48, 36, 31

What is the median number of miles Jenna cycled?

a)

24

b)

39

c)

36

d)

52

47.

Dr. Dre is a dentist. He needs to report on the average (Mean) number of cavities that his patients have.

1, 0, 1, 5, 0, 3, 4. What is the average number of cavities?

a)

14

b)

2

c)

7

d)

1

48.

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the MODE.

12,10,10,10,13,12,11,13,10

a)

10

b)

12

c)

10 and 12

d)

No Mode

49.

Find the mean of following data: 10, 15, 12, 9, 2.

a)

9.6

b)

10.9

c)

12

d)

54

50.

What is the median of following data? 5, 7, 10, 3, 8

a)

10

b)

7.5

c)

7

d)

6

51.

If the number of books in a sample of eight boxes is as follows: 11, 8, 2, 2, 7, 7, 2, 5, then the data set is said to be …

a)

bimodal

b)

multimodal

c)

unimodal

d)

having no mode

52.

If the mean of 5 values equals 64, then  Σx\Sigma x  = ?

a)

12.8

b)

69

c)

200

d)

320

53.

When the distribution is positively skewed, the relationship between the mean, median and mode will be:

a)

mean=median=modemean=median=mode

b)

mean>median>modemean>median>mode  

c)

mean<median<modemean<median<mode  

d)

cannot be determined

54.

What is the mean of the following numbers? 10, 39, 70, 39, 74, 38, 24?

a)

42

b)

39

c)

39.5

d)

35.5

55.

What number would you divide by to calculate the mean of 3, 4, 5, and 6?

a)

6

b)

3

c)

5

d)

4

56.

What measure of central tendency is calculated by adding all the values and dividing the sum by the number of values?

a)

median

b)

mean

c)

mode

d)

range

57.

The mean of four numbers is 71.5. If three of the numbers are 58, 76, and 88, what is the value of the fourth number?

a)

64

b)

60

c)

76

d)

82

58.

What is the median of the following numbers? 10, 39, 71, 42, 39, 76, 38, 25

a)

42.5

b)

42

c)

39

d)

35.5

59.

The front row in a movie theatre has 23 seats. If you were asked to sit in the seat that occupied the median position, in which seat would you have to sit?

a)

1

b)

12

c)

13

d)

23

60.

What is the median score achieved by a student who recorded the following scores on 10 math quizzes? 68, 55, 70, 62, 71, 58, 79, 82, 60, 75

a)

68

b)

69

c)

71

d)

79

61.

A set of four numbers that begins with the number 32 is arranged from smallest to largest. If the median is 35, which of the following could possibly be the set of numbers?

a)

32, 32, 36, 38

b)

32, 35, 38, 41

c)

32, 34, 36, 39

d)

32, 36, 40, 44

62.

Which of the following measures can be determined for qualitative data?

a)

Mean

b)

Median

c)

Mode

d)

All of These

63.

What is the term used to describe the distribution of a data set with one mode?

a)

Multimodal

b)

Unimodal

c)

Nonmodal

d)

Bimodal

64.

Find the Z-score.

Mean = 22

Standard Deviation: 3.1

x = 29

a)

2.26

b)

16.45

c)

-2.26

d)

1.26

65.

Find the mean

Z-score = -0.4

Standard Deviation: 7

x = 20

a)

22.8

b)

17.2

c)

22.04

d)

32.5

66.

Find the value of x.

Z-score = -2.2

mean = 25

Standard Deviation: 7

a)

9.6

b)

-36

c)

5.2

d)

23.46

67.

Which of the following is equivalent to the upper quartile?

a)

1st Quartile

b)

5th Decile

c)

75th Percentile

d)

2nd Quartile

68.

Which of the following is NOT equivalent to Median?

a)

5th Decile

b)

Upper Quartile

c)

2nd Quartile

d)

50th Percentile

69.

Marco's score in a 75-item test was the median score.  Which of the following is true?

a)

A. 75% of his classmates got a score equal or below his score.

b)

B. 60% of his classmates got a score equal or below his score.

c)

C. 50% of his classmates got a score equal or below his score.

d)

D. 35% of his classmates got a score equal or below his score.

70.

The lower quartile is equal to _____________.

a)

50th percentile

b)

25th percentile

c)

3rd quartile      

d)

2nd decile

71.

What do you call each score point when the distribution is divided into ten equal parts?

a)

Decile

b)

Quantile

c)

Quartile

d)

Percentile

72.

How many percent of the distribution are higher than the first quartile?

a)

25%

b)

50%

c)

70%

d)

75%

73.

In a 100-item test, the passing mark is the 3rd quartile.  What does this imply?

a)

The students should answer at least 75 items correctly to pass the test.

b)

The students should answer at least 50 items correctly to pass the test.

c)

The students should answer at most 75 items correctly to pass the test.

d)

The students should answer at most 50 items correctly to pass the test.

74.

How do you interpret if a student’s score in an exam corresponds to the 75th percentile?

a)

A.    The student obtained 75 correct answers out of 100 questions

b)

B. The student’s score is higher than 75% of his classmates.

c)

C. The student’s score is higher than 25% of his classmates

d)

D. The student’s grade is 75.

75.

Which of the following is the difference between the third quartile and the first quartile?

a)

Interquartile Range

b)

lower quartile

c)

median

d)

upper quartile

76.

Which of the following measures of position divides the distribution into four equal parts?

a)

Decile

b)

Quantile

c)

Quartile

d)

Percentile

77.

Adam's z-score on a test is 2.5.  What does this mean?

a)
He'd better start studying.
b)
He did better than EVERYONE.
c)

He scored 2.5 standard deviations above the mean.

d)
He did terrible.
78.
Joanne's Z-score is -1.5.  What does this mean?
a)
She didn't take the test yet.
b)

She scored 1.5 standard deviations below the mean.

c)
She did better than most people.
d)
No clue
79.
Z-scores are calculated by subtracting the mean from the score and then dividing by the standard deviation.  Which of the following is a formula that describes this calculation?
a)
Z = (score - mean) / stand. devation
b)
Z = (mean - score) / stand. dev.
c)
Z = score/stand. dev/ mean
d)
Z = dragonball
80.

What is one of the correct formulas for finding z-scores?

a)

z=x−μσz=\frac{x-\mu}{\sigma}

b)

z=μ−xσz=\frac{\mu-x}{\sigma}

c)

Sx=x−μσS_x=\frac{x-\mu}{\sigma}

81.

If Gonzalo's score is 87, the class mean is 82, and the s = 4, what is Gonzalo's z-score?

a)
-1.25
b)
+1.25
c)
+1.20
d)
+1.02
82.

What is the z-score (standard score) for Tina if she got a 31 on the ACT, the mean was 23 and the standard deviation was 4?

a)

0.2

b)

2.0

c)
-2.0
d)
-0.2
83.

What is the standard score for Paula if she got 1400 on the SAT, the mean was 1100 and the standard deviation was 275?

a)
-1.90
b)
-1.09
c)

1.09

d)

1.90

84.

So if Tina's Z-score is 2.0 and Paula's Z-score is 1.09, who performed better?

a)

Tina's performance is farther away from and above the mean, so she did better.

b)
Paula's score is closer to the mean so she did better.
c)
They both did the same.
85.

Adam's Z-score on a test is 2.50. What does this mean?

a)

Adam's score has a 2.5% chance of being better than any other randomly selected score.

b)

Adam's test score was better than 25% of his peers.

c)

He scored 2.5 standard deviations above the average.

d)

He did terrible.

86.

The 50th percentile is also known as the _______________.

a)

median

b)

mean

c)

mode

d)

best percentile

87.

In a factory, the weight of the concrete poured into a mold by a machine follows a normal distribution with a mean of 1150 pounds and a standard deviation of 22 pounds. What weight falls at the 50th percentile?

a)

1106 pounds

b)

1128 pounds

c)

1150 pounds

d)

1172 pounds

88.
What percent of the data is between 25 and 30 on the number line?
a)
25%
b)
`50%
c)
75%
d)
100%
89.

What kind of sampling technique is the following:


List the names of all the students alphabetically and contact the parent of every 25th student.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

90.

What kind of sample technique is the following:


Select at random 150 parents and send them a survey.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

91.

What kind of sample technique is the following:


Selecting every 8th person in line for a water slide.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

92.

What kind of sample technique is the following:


Survey 130 names chosen out of a hat.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

93.

What kind of sample technique is the following:


Question 90 employees chosen at random.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

94.

What kind of sample technique is the following:


Question everyone in the cafeteria.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

95.

What kind of sample technique is the following:


Question every 5th person you see in the school hallway.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

96.

What kind of sample technique is the following:


Question every 10th person you see leaving the mall.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

97.

What kind of sample technique is the following:


Question every person in the movie theater parking lot.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

98.

What kind of sample technique is the following:


Survey the students in your classroom.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

99.

What kind of sample technique is the following:


Selecting 60 customers who have purchased your product and sending them a survey.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

100.

What kind of sample technique is the following:


The teacher selecting students by pulling their name out of a hat.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

101.

What kind of sample technique is the following:


Giving a survey to everyone on your swim team.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

102.

What kind of sample technique is the following:


Survey every 8th customer who leaves your store.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

103.

What kind of sample technique is the following:


Question everyone who sits in your row.

a)

Convenience Sampling

b)

Simple Random Sampling

c)

Systematic Sampling

d)

Sample

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