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Statistic For Ungrouped Data

Total questions: 25

Worksheet time: 40mins

Name
Class
Date
1.
How do you find the range?
a)
order least to greatest, then slash from each side until you reach the middle
b)
add the numbers in your data set, then divide by the amount you added
c)
look for the number that repeats the most
d)
highest number minus the lowest number
2.
What is the median?
a)
62
b)
58
c)
66
d)
60
3.
What is the range of the set of data?
a)
70
b)
65
c)
80
d)
55
4.
What was the highest score on the math test?
a)
53
b)
79
c)
97
d)
90
5.
What is the mean of test scores?
{70, 70, 80, 85, 85, 90, 95, 95, 100, 100}
a)
87
b)
85, 95, and 100
c)
30
d)
85 and 90
6.

In the set of scores: 14, 17, 10, 22, 19, 24, 8, 12, and 19. The median is

a)

17

b)

15

c)

16

d)

13

7.

In a 100 item test, the passing mark is the 3rd quartile. What does it 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.

8.
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
9.
Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15
a)
13
b)

7

c)
9
d)
6
10.

Find the IQR (Q3 - Q1)  of the data

20, 22, 25, 29, 31

a)
30
b)
21
c)
25
d)
9
11.
What is the mode of the dot plot?
a)
8
b)
9
c)
1
d)
2
12.

The data set are 17, 15. 12. 15. 9, 11, what is the mean value

a)

13.5

b)

13.17

c)

12.5

d)

12.17

13.

The teacher measured the length of each rope that the student submitted, they are 2 ft, 1.8 ft, 1.75, 2 ft, 1.5 ft and 2 ft. What will be the average length of all the ropes.

a)

1.84

b)

8.14

c)

1.88

d)

4.86

14.
A store sells loaves of bread. The table below shows the number of loaves of bread sold each day for a week. What is the difference between the mean and median number of loaves of bread sold?
a)
8
b)
12
c)
19
d)
25
15.
If the standard deviation of a data set is 4, what is the variance?
a)
2
b)
16
c)
4
16.
Four data sets are shown below.
Set 1: {10, 19, 38, 50, 51}
Set 2: {5, 21, 26, 39, 51}
Set 3: {9, 38, 50, 50, 51}
Set 4: {5, 28, 28, 28, 51}
Which data set has the largest standard deviation?
a)
Set 1
b)
Set 2
c)
Set 3
d)
Set 4
17.
What is the variance for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2
a)
47.47
b)
102.01
c)
52.77
d)
81
18.
What does this symbol represent?
a)
Standard Deviation
b)
Variance
c)
Mean Absolute Deviation
d)
Sigma
19.

what is the median in the given data, 0.5, 0.25, 0.05, 0.005, 0.75?

a)

0.25

b)

0.5

c)

0.05

d)

0.75

20.

The scores of 7 students in a mathematics seatwork are 3, 4, 4, 6, 7, 7, 8. What is the first quartile score?

a)

3

b)

4

c)

6

d)

7

21.

Find the difference between the interquartile range and the range of the set data above

a)

8

b)

12

c)

5

d)

17

22.

Sum of 15 numbers is 1200 while sum of square of the numbers is 381000.

Calculate the mean of the numbers.

a)

80

b)

82

c)

77

d)

85

23.

What is the range of the data

a)

27

b)

31

c)

30

d)

34

24.

The mode of the data is ....

a)

dogs

b)

cats

c)

fishes

d)

hamsters

25.

What measures of position divides the distribution into 100 equal parts?

a)

Quartiles

b)

Deciles

c)

Percentiles

d)

Range