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Remedial Math 4th

Total questions: 50

Worksheet time: 28mins

Name
Class
Date
1.

The observation which occurs most frequently in a sample is the___________

a)

median

b)

mean deviation

c)

standard deviation

d)

mode

2.

What is the median of the sample 5, 5, 11, 9, 8, 5, 8 ?

a)

5

b)

6

c)

8

d)

9

3.

To calculate the median, all the items of a series have to be arranged in a/an ________.

a)

DESCENDING

ORDER

b)

ASCENDING ORDER

c)

ASCENDING OR DESCENDING ORDER

d)

NONE

4.

_________ is not a measure of central tendency

a)

MODE

b)

MEAN

c)

RANGE

d)

MEDIAN

5.

Which of the following is a characteristic of a mean?

a)

The sum of deviations from the mean is zero

b)

It minimizes the sum of squared deviations

c)

It is affected by extreme scores

d)

All of the above

6.

Find the mode of the set of observation shown. 15, 13, 13, 14, 17, 17, 18, 12, 17.

a)

17

b)

14

c)

13

d)

15

7.

What is the mean of the following numbers: 23, 45, 87, 40, 50?

a)

49

b)

34

c)

56

d)

78

8.

If there is an even number of data in the data set how do you find the median?

a)

order the data and find the middle value

b)

order the data add the two middle values and divide by 2

9.

When calculating the mean you need to _____________

a)

add all the numbers together and divide the number of items

b)

find the middle value

c)

multiply all the numbers

d)

Select the measure that appears most often in the set

10.

The mean , median and mode are also known as __________

a)

measures of central tendency

b)

center values

c)

middle values

11.

1. The score points which divides an ordered data into four equal parts.

a)

a. decile

b)

b. percentile

c)

c. quartile

12.

2. It is called the upper quartile.

a)

a. First quartile

b)

b. Second quartile

c)

c. Third quartile

13.

3. Which of the following quartiles is also known as the median value of any given set of data?

a)

a. Q1

b)

b. Q2

c)

c. Q3

14.

4. The deciles divide a set of data into how many equal parts?

a)

a. 4

b)

b. 8

c)

c. 10

15.

5. Which of the following is NOT equal to P50?

a)

a. Q3

b)

b. median

c)

c. D5

16.

6. Which of the following percentiles is the same as D4?

a)

a. P4

b)

b. P20

c)

c. P40

17.

7. Louie’s score in a 75-item test was the median score. What is his percentile rank?

a)

a. 35th

b)

b. 50th

c)

c. 25th

18.

8. The nine score points which divides a distribution into ten equal parts.

a)

a. quartile

b)

b. decile

c)

c. percentile

19.

9. Which of the following deciles is the same as P40?

a)

a. D2

b)

b. D3

c)

c. D4

20.

10. Which of the following percentiles is also known as the median value of any given set of data?

a)

a. P10

b)

b. P30

c)

c. P50

21.

11. Lea’s score in a 75-item test was the upper quartile score. What is her percentile rank?

a)

a. P25

b)

b. P50

c)

c. P75

22.

12. When a distribution is divided into hundred equal parts, each score point that describes the distribution is called __________?

a)

a. decile

b)

b. percentile

c)

c. quartile

23.

13. The lower quartile is equal to __________.

a)

a. 3rd quartile

b)

b. 2nd decile

c)

c. 25 percentile

24.

14. It is the middle number in the sorted list of numbers.

a)

a. quartile

b)

b. percentile

c)

c. median

25.

15. Which of the following is not true about the statement; "The 6.5th decile for the time it took to finish the test was 40 minutes"

a)

a. 65% of the learners finished the test in 40 minutes or less.

b)

b. 35% of the learners finished the test in 40 minutes or more.

c)

c. 65% of the learners finished the test in 40 minutes or more.

26.

A type of data that has been sorted into groups called classes.

a)

A. grouped data

b)

B. frequency table

c)

C. ungrouped data

d)

D. raw data

27.

How to obtain the value of lower boundary (Lb) of each class interval?

(Note: UM - Upper Limit, LM- Lower Limit)

a)

Lb = UM - 0.5

b)

Lb = UM + 0.5

c)

Lb = LM - 0.5

d)

Lb = LM - 0.5

28.

Refer to the table as shown, what is the class interval in the given table?

a)

3

b)

4

c)

5

d)

6

29.

What is the formula in finding kth value of Percentile in a grouped data?

a)

Pk=LB+{kn100−<cfbfPK}iP_k=LB+\left\{\frac{\frac{kn}{100}-<cf_b}{f_{PK}}\right\}i

b)

Pk=LB+{kn10−<cfbfPK}iP_k=LB_{ }+\left\{\frac{\frac{kn}{10}-<cf_b}{f_{PK}}\right\}i

c)

Pk=LB+{kn4−<cfbfPK}iP_k=LB_{ }+\left\{\frac{\frac{kn}{4}-<cf_b}{f_{PK}}\right\}i

d)

Pk=LB+{kn25−<cfbfPK}iP_k=LB_{ }+\left\{\frac{\frac{kn}{25}-<cf_b}{f_{PK}}\right\}i

30.

Refer to the table as shown, If you are going to solve for the 3rd quartile of the grouped data, what lower boundary are you going to use?

a)

115.5

b)

109.5

c)

104.5

d)

97.5

31.

Which of the following measures does not belong to the group?

a)

second quartile

b)

fifth decile

c)

first quartile

32.

If the first quartile of the given data is 20 what does it mean?

a)

This means that 25% of the students scored lower or equal to 20.

b)

This means that 15% of the students scored lower or equal to 20.

c)

This means that 10% of the students scored lower or equal to 20.

33.

Values that divide the data into 10 equal parts.

a)

deciles

b)

quartiles

c)

percentiles

34.

The measure of position that divides an arrange data set into 100 equal parts.

a)

deciles

b)

quartiles

c)

percentiles

35.

The fifth decile is equal to the second quartile or the ______

a)

mean

b)

median

c)

mode

36.

How many deciles does a set of data have?

a)

8

b)

9

c)

10

37.

How many percentiles does a set of data set have?

a)

100

b)

99

c)

90

38.

What is the value in the data set below which the lowest 75% can be found?

a)

Q1

b)

Q2

c)

Q3

39.

Rochelle got a score of 55 which is equivalent to 70th percentile in a mathematics test. Which of the following is not true?

a)

She scored above 70% of her classmates

b)

If the passing mark is the first quartile, she passed the test

c)

Her score is below the 5th decile

40.

Mhel's score in a 75 item test was the median score. What is his percentile rank?

a)

25th

b)

50th

c)

75th

41.

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 50 items correctly to pass the test.

42.

How many percent corresponds P35 if you will interpret it?

a)

35%

b)

53%

c)

3.5%

43.

Refer to the table as shown, find the total frequency of the given table.

a)

10

b)

20

c)

30

d)

40

44.

In which class does P50 value belongs using the formula P50 = kN100\frac{kN}{100}  ?

a)

11 - 15

b)

16 - 20

c)

21 - 25

d)

26 - 30

45.

What is the value of lower boundary if P50 belongs to 21 - 25 class?

a)

20.5

b)

21.5

c)

24.5

d)

25.5

46.

If P50 belongs to class 21 - 25, what is the value of <cfb?

a)

6

b)

13

c)

16

d)

24

47.

What is the value of class size interval in this frequency distribution table?

a)

8

b)

7

c)

6

d)

5

48.

Using the formula PkP_k  = LB + (kN100−<cfbfPk)i\left(\frac{\frac{kN}{100}-<cfb}{f_{Pk}}\right)i  . What is the value of P50 if kN100\frac{kN}{100}  = 15, <cfb = 13, i = 5 and fPk = 3

a)

22.80

b)

22.85

c)

23.80

d)

23.85

49.

Refer to table of scores of students in Grade 10 Mathematics: What is the total number of students in Grade 10 Mathematics.

a)

60

b)

55

c)

50

d)

45

50.

Refer to table of scores of students in Grade 10 Mathematics: What is the class interval of the highest frequency?

a)

46-50

b)

36-40

c)

26-30

d)

21-25

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