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Posted: May 5th, 2018

SPRING 2014

ASSIGNMENT 2 – SOLVE AND WRITE THE CORRECT ANSWERS FROM YOUR

COMPUTED VALUES IN THE BLANKS PROVIDED.

Half I.A. Select the right reply and write the

relevant letter inside the space provided. (.25 POINTS FOR EVERY CORRECT ANSWER)

______ 1. Which certainly one of many following measures of dispersion

does not divide a set of observations into equal elements?

a. quartiles b. deciles

c. percentiles d. customary deviations

______2. The interquartile fluctuate is the excellence between:

a. the second and third quartile. b. the second and fourth

quartile.

c. the first and third quartile. d. the first and remaining

quartile.

______3. A contingency desk :

a. can solely be used when there are two ranges of each

variable.

b. will be utilized to verify the connection between ordinal or

nominal diploma variables.

c. can solely be used with interval or ratio diploma variables.

d. is constructed from the quartiles of an data set..

_______4.A dot plot reveals the fluctuate of values alongside the:

a. vertical axis. b. ( x, y) diagonal axis.

c. median axis. d. horizontal axis.

______ 5. When displaying data with a dot plot, we:

a. do not lose the id of an individual data degree b.

are ready to current the fluctuate of the values.

c. are ready to see the type of the distribution. d. all of

these in a, b. c are proper.

______ 6. A scatter diagram is a graphic machine used to

portray:

a. the suggest of the knowledge values. b. the fluctuate of the knowledge

values.

c. the midpoint of data values. d. the connection between

variables.

______ 7. In a stem and leaf present:

a. the leaf is the principle digit or digits of the amount.

b. the stem is the principle digit or digits of the amount.

c. the stem or the leaf could possibly be the principle digit or digits

of the amount.

d. the stem is the trailing digit.

______ eight. The coefficient of skewness is a measure:

a. of the connection of the mode and median. b. based on

the suggest deviation.

c. of the symmetry of a distribution. d. based on the middle

50 % of the observations.

______9. A area plot is based on:

a. the suggest. b. percentiles.

c. deciles. d. the first and third quartile, the median, the

most and the minimal.

______ 10. The interquartile fluctuate is based on:

a. the median. b. the suggest deviation.

c. the sq. of the suggest deviation. d. the middle 50

% of the observations.

Half I.B. Resolve the subsequent devices and write the right

options on the areas provided. (.25 POINTS FOR EVERY CORRECT ANSWER)

____________ 11.5 kids have heights of 138 cm, 135

cm, 140 cm, 139 cmand 141 cm. What is the

fluctuate of their heights?

____________ 12.What is the fluctuate of the subsequent

numbers:19, 21, 18, 17, 18, 22, 46?

____________ 13. What is the median inside the following

numbers:19, 21, 18, 17, 18, 22, 46?

____________ 14.Waleed took 9 assessments in quite a few matters

and acquired scores of 68, 71, 71,84, 53, 71, 62, 67.

What was Walled’s mode score?

____________ 15. In a set of scores, the value 93 appeared

twice, better than another amount. What is the

mode score?

____________ 16. The temperature in ranges Celsius over 4

days in April was 28, 21,19 and 30. What was

the suggest temperature?

The weekly salaries of six employees at a restaurant are

$180, $220, $98, $180, $140, $200. For these six salaries, uncover:

_____________17. the median

_____________ 18. the mode

_____________19.A storeowner saved a tally of the sizes of

matches purchased in her retailer. Which measure of central tendency must the

storeowner use to clarify the standard measurement swimsuit provided?

_____________20.A tally was created from the number of events each

color of crayon was utilized by a kindergarten class. Which measure of central

tendency must the coach use to search out out which color is the favorite color

of her class?

_____________ 21.The science check out grades are posted. The

class did very correctly. All school college students taking the check out scored over 75.

Sadly, 4 school college students have been absent for the check out and the laptop listed

their scores as zero until the check out is taken. Assuming that no score repeated additional

events than the zero’s, what measure of central tendency would most undoubtedly give the

biggest illustration of this data?

A card is chosen at random from a deck of 52 collaborating in enjoying playing cards.

There are 4 Queens and 4 Kings in a deck of collaborating in

enjoying playing cards.Using these DATA, reply questions 18.

_____________22.What is the likelihood it is a Queen or a

King?

_____________23.There are 4 Queens and 4 Kings, so the

Number of strategies it can in all probability happen is__.

_____________24.There are 52 enjoying playing cards altogether, so the Full

number of outcomes is______

_____________25.The possibility the cardboard is each a Queen

or a King is___

DESCRIBE HOW A FREQUENCY DISTRIBUTION IS PREPARED:

__________________________________________________________________________________________________

__________________________________________________________________________________________________

Half II Current your complete work. Write the options inside the

areas provided.

76

74

71

78

80

67

80

82

67

88

72

78

85

76

84

82

83

80

72

82

77

79

86

89

69

70

82

86

78

77

1. The scores of a sample of 30 school college students in certainly one of many

matters of a positive Faculty are confirmed inside the desk.

Assemble a dot plot for the knowledge.

| | | | | | | | | | | | | | | | | | | | | | |

STEM

LEAF

5

6 eight

6

1 2 2 4 eight

7

zero 4 6 6

eight

zero 4 4 6 6 6 6 6

9

zero 2 6

10

zero

2. The following stem and leaf plot reveals the scores on a

present examination of students in Statistics.

2.a.

2.a.What variety of school college students took the check out?

2.b.

2.b. What have been one of the best and lowest scores?

2.c.

2.c. What variety of school college students scored 70 or bigger?

2.d.

2.d. What % of the students scored lower than 70?

15

17

23

26

27

35

72

88

91

98

102

three. The revenues of the very best eleven non-public laptop computer

producers are given (in hundred tons of of hundreds).

three.a. Q1

three.b. Q3

three.c. M

three.a. Compute the first quartile.

three.b. The third quartile.

three.c. Resolve the median.

three.d. Draw a area plot for the knowledge.

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