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MMW PRETEST (FDT, MEASURES OF CENTRAL TENDENCY)

Total questions: 60

Worksheet time: 3600secs

Name
Class
Date
1.
What’s the mean average of these three numbers?
a)
2
b)
7
c)
8
d)
9
2.
What’s the mode?
a)
1
b)
2
c)
7
d)
9
3.

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

4.

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.

5.
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.
6.
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.
7.
A data set can have more than one mode
a)
True
b)
False
8.
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.
9.
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
10.
The mode score on the 6th grade math test was 94! Which of these interpretations must be correct?
a)
99 was the highest score on the test.
b)
More students received a 94 than any other score
c)
No student scored below a 50
d)
A score of 91 was slightly below average.
11.

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

12.
In order to find the median, the data must be sorted from least to greatest first.
a)
True
b)
False
13.

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

14.

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

15.

The heights of some students are given.

158cm 172cm 164cm

164cm 167cm 159cm

What is the RANGE of the heights?

a)

13 cm

b)

330 cm

c)

164 cm

d)

14 cm

16.

What is the MEDIAN of this set of data?

10, 90, 80, 60, 50, 40, 70, 30, 20, 100

a)

50

b)

60

c)

55

d)

45

17.
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
18.
Erin and Chloe are trying to determine which number is not the mean, median, mode, or range of the data set 4, 3, 15, 11, 3, 8, 7, 5?
a)
3
b)
6
c)
12
d)
11
19.
The scores awarded to 25 students for an assignment were as follows:
4  7  5  9  8  6  7  7  8  5  6  9  8    5  8  7  4  7  3  6  8  9  7  6  9
What is  the mode?
a)
6
b)
7
c)
8
d)
9
20.

In a grouped data, in what class can the median be found?

a)

Mean class

b)

Median class

c)

Modal class

d)

Middle class

21.

What is the modal class of this distribution?

a)

20-29

b)

30-39

c)

40-49

d)

50-59

22.

What is the class size of the grouped data ?

a)

10

b)

4

c)

15

d)

5

23.

The value of X in the table is

a)

32

b)

70

c)

35

d)

38

24.

The table shows the distribution of the number of hours worked each week (on average) for a sample of 100 community college students. The mean

a)

50

b)

34.6

c)

20

d)

36.8

25.

The data presented in the table have a mean value of:

a)

172

b)

161

c)

157

d)

184

26.
What does "mean" mean?
a)
average
b)
middle
c)
repeats the most
d)
variation
27.
What is a the meaning for "median"?
a)
fair share
b)
middle
c)
repeats the most
d)
variation
28.

This data represents the age distribution of a sample of 100 people covered by health insurance (private or government). The sample was taken in 2003. The median class of this data set is

a)

25-34

b)

35-44

c)

45-54

d)

55-64

29.

This data represents the age distribution of a sample of 100 people covered by health insurance (private or government). The sample was taken in 2003. The mean of this data set is

a)

52

b)

25

c)

44

d)

32

30.

Given the date below, what is the value of N?

a)

30

b)

40

c)

50

d)

60

31.

What is the formula in finding the mean of Grouped Data?

a)
b)
c)
d)

None of them.

32.

What is the class interval of the data on the table?

a)

2

b)

3

c)

4

d)

5

33.

Find the mean.

a)

10

b)

20

c)

30

d)

40

34.

What is the value of N?

a)

80

b)

81

c)

85

d)

90

35.

In completing the table for getting the median of grouped data, the following data is needed: Frequency, Lower Boundary & _____________.

a)

higher boundary

b)

∑fx\sum_{ }^{ }fx  

c)

Class interval

d)

Cumulative frequency

36.

How will you be able to find the median class of the data above?

a)

Find the highest frequency.

b)

Divide the total frequency by 2.

c)

Divide the total frequency by 2 then find where it belongs to the cumulative frequency.

d)

Find the cumulative frequency of the highest frequency value.

37.

In what class does the median class belongs?

a)

70-74

b)

65-69

c)

60-64

d)

55-59

38.

It illustrates the middle value of the given set of data.

a)

MEAN

b)

MEDIAN

c)

MODE

d)

RANGE

39.

Which of the following best describes the mode of a given set of data?

a)

The measure or value which occurs most frequently (repeated) in a set of data.

b)

The average of a set of data.

c)

The middle value of a set of data

d)

The difference of the highest and the lowest value of a set of data.

40.

Which is the lower boundary of the median class?

a)

59.5

b)

54.5

c)

49.5

d)

44.5

41.

Md=L +(n2−<cFf)iMd=L\ +\left(\frac{\frac{n}{2}-<cF}{f}\right)i  

Find the median. Using the formula above.

a)

32.6

b)

56.9

c)

66.51

d)

68.10

42.

If mode is the most frequent of a set of data, in which class does the modal class belongs?

a)

16-19

b)

20-23

c)

24-27

d)

44-47

43.

Find the lower boundery of the modal class.

a)

23.5

b)

26.5

c)

27.5

d)

35.5

44.

Mode=L + (d1d1+d2)iMode=L\ +\ \left(\frac{d_1}{d_1+d_2}\right)i  

Find the mode using the formula above.

a)

35.18

b)

33.12

c)

25.66

d)

22.71

45.

Which of the following defines mean?

a)

The most frequent score or value in a frequency distribution.

b)

The middlemost item or score or value in a distribution of scores arrange of magnitude.

c)

The sum of all values in a score distribution divided in the number of score or cases.

d)

The most typical measure of central location where the central values of the series are closely grouped.

46.

What is the formula in computing RANGE ?

a)

R = LV x HV

b)

R = HV - LV

c)

R = HV / LV

d)

R = HV + LV

47.

Compute for the Range :

20, 6, 23, 19, 9, 14, 15, 3, 1, 12,

10, 20, 13, 3, 17, 10, 11, 6, 21, 9

a)

20

b)

21

c)

22

d)

23

48.

What is the lowest value of the given data ?

20, 6, 23, 19, 9, 14, 15, 3, 1, 12,

10, 20, 13, 3, 17, 10, 11, 6, 21,9

a)

3

b)

0

c)

2

d)

1

49.

What is the value of N = ?


20, 6, 23, 19, 9, 14, 15, 3, 1, 12,

10, 20, 13, 3, 17, 10, 11, 6, 21, 9

a)

25

b)

30

c)

20

d)

15

50.

Compute for class size (s), if the desired number classes (c) is 5 and R = 22.

20, 6, 23, 19, 9, 14, 15, 3, 1, 12,

10, 20, 13, 3, 17, 10, 11, 6, 21, 9

a)

5

b)

4

c)

6

d)

4.4

51.

What is ( c ) in the formula : s = R / c

a)

Desired number of team

b)

Desired number of group

c)

Desired number of division

d)

Desired number of table

52.

The first step in making a Frequency Table ...

a)

Find the Range

b)

Find the Class width

c)

Find the number of groups

d)

Find the number of items

53.

It helps marks in counting the frequency of occurrence of something.....

a)

Upper Limit

b)

Frequency Table

c)

Lower Limit

d)

Tally

54.

It is a systematic way of presenting data using a table.

a)

Class Interval

b)

Collecting Data

c)

Frequency Distribution Table

d)

Class size

55.

The number of times the data value occurs is called ____________.

a)

Range

b)

Frequency

c)

Class Interval

d)

Class size

56.

The table shows the scores of 40 students in their Math Quiz. What is the frequency of the scores from 21-25?

a)

9

b)

8

c)

15

d)

6

57.

The table shows the scores of 40 students in their Math Quiz. What is the class size of the given data?

a)

5

b)

6

c)

7

d)

8

58.

The following are the scores obtained by a group of 30 grade 7 students in Science Quiz. What is the highest score?

a)

29

b)

25

c)

28

d)

21

59.

The following are the scores obtained by a group of 30 Grade 7 students in Science Quiz. What is the range?

a)

20

b)

21

c)

22

d)

18

60.

The following are the scores obtained by a group of 30 Grade 7 students in Science Quiz. What is the frequency of the scores from 6-10?

a)

7

b)

4

c)

13

d)

3

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