Quiz about REVISION: DATA DESCRIPTION

Question 1

Mean is ...

Accepted Answer

The sum of all the values in the data set divided by the number of values in the data set.

Accepted Answer

average

Answer

the most frequent score in the data set

Answer

the middle score for a set of data that has been arranged in order of magnitude

Question 2

Mode is ...

Accepted Answer

the most frequent score in the data set

Answer

The sum of all the values in the data set divided by the number of values in the data set.

Answer

average

Answer

the middle score for a set of data that has been arranged in order of magnitude

Question 3

Median is ...

Accepted Answer

the middle score for a set of data that has been arranged in order of magnitude

Answer

The sum of all the values in the data set divided by the number of values in the data set.

Answer

the most frequent score in the data set

Answer

average

Question 4

Standard Deviation is

Accepted Answer

square root of variance

Answer

square of variance

Question 5

The distribution of the data is ...

Accepted Answer

Symmetrical

Answer

Skew to the right

Answer

Skew to the left

Answer

None of the above

Question 6

The distribution of the data is ...

Accepted Answer

Skew to the left

Answer

Skew to the right

Answer

Symmetrical

Answer

None of the above

Question 7

Mean = 29.9

Median = 30.1

Mode = 31

The distribution of the data is ...

Accepted Answer

Skew to the left

Answer

Skew to the right

Answer

Symmetrical

Answer

None of the above

Question 8

Mean = 61 marks

Median = 59 marks

Mode = 55

The distribution of the data is ...

Accepted Answer

Positively skewed

Answer

Negatively skewed

Answer

Symmetrical

Answer

None of the above

Question 9

26, 28, 27, 27, 28, 25, 32, 31, 33, 29, 40, 25

Accepted Answer

Ungrouped Data

Answer

Grouped Data

Question 10

Question 10.

Accepted Answer

Grouped Data

Answer

Ungrouped Data

Question 11

Question 11.

Accepted Answer

Ungrouped Data

Answer

Grouped Data

Question 12

Given a set of data.

26, 28, 27, 27, 28, 25, 32, 31, 33, 29, 40, 25

Choose CORRECT statement(s).

Accepted Answer

Mean, $$\overline{x}=29.25$$

Accepted Answer

Median is 28

Accepted Answer

Positively skewed

Answer

Mode is 25 and 27

Question 13

Given a set of data.

Choose CORRECT statement(s).

Accepted Answer

Mean, $$\overline{x}=6.17$$

Accepted Answer

Median is 6

Accepted Answer

Positively skewed

Answer

Mode is 9

Question 14

Given a set of data.

Choose CORRECT statement(s).

Accepted Answer

Mean, $$\overline{x}=55.9\ kg\ $$

Accepted Answer

Median class is 55 - 64

Accepted Answer

Mode is 58.5

Answer

Class size is 9

Question 15

If the variance of a set of data is 76.65, find the value of standard deviation of the data.

Accepted Answer

8.74

Answer

76.65

Answer

38.33

Answer

5875.22

Question 16

Mean = 12

Standard Deviation = 3

Find the value of coefficient of variation of the data.

Accepted Answer

25%

Answer

50%

Answer

75%

Answer

400%

Question 17

Coefficient of Variation of a data is 35%.

Accepted Answer

Data is less dispersed and more consistent.

Answer

Data is more dispersed and less consistent.

Answer

Data is symmetrical

Question 18

Coefficient of Variation of a data is 65%.

Accepted Answer

Data is more dispersed and less consistent.

Answer

Data is less dispersed and more consistent.

Answer

Data is symmetrical

Question 19

Data A

Mean = 2.4

Standard Deviation = 0.95

Data B

Mean = 3.5

Standard Deviation = 0.75

Which data is more stabil and reliable?

Accepted Answer

Coefficient of Variation of Data A is 39.58%

Accepted Answer

Coefficient of Variation of Data B is 21.43%

Accepted Answer

Data B is more stable and reliable than Data A.

Answer

Data A is more stable and reliable than Data B.

REVISION: DATA DESCRIPTION

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