SPRING 2014
ASSIGNMENT 2 – SOLVE AND WRITE THE CORRECT ANSWERS FROM YOUR
COMPUTED VALUES IN THE BLANKS PROVIDED.
Half I.A. Choose the proper reply and write the
applicable letter within the area supplied. (.25 POINTS FOR EVERY CORRECT ANSWER)
______ 1. Which one of many following measures of dispersion
doesn’t divide a set of observations into equal components?
a. quartiles b. deciles
c. percentiles d. customary deviations
______2. The interquartile vary is the distinction between:
a. the second and third quartile. b. the second and fourth
quartile.
c. the primary and third quartile. d. the primary and final
quartile.
______3. A contingency desk :
a. can solely be used when there are two ranges of every
variable.
b. can be utilized to check the connection between ordinal or
nominal degree variables.
c. can solely be used with interval or ratio degree variables.
d. is constructed from the quartiles of an information set..
_______4.A dot plot reveals the vary of values alongside the:
a. vertical axis. b. ( x, y) diagonal axis.
c. median axis. d. horizontal axis.
______ 5. When displaying information with a dot plot, we:
a. don’t lose the id of a person information level b.
are in a position to present the vary of the values.
c. are in a position to see the form of the distribution. d. all of
these in a, b. c are right.
______ 6. A scatter diagram is a graphic device used to
painting:
a. the imply of the information values. b. the vary of the information
values.
c. the midpoint of information values. d. the connection between
variables.
______ 7. In a stem and leaf show:
a. the leaf is the main digit or digits of the quantity.
b. the stem is the main digit or digits of the quantity.
c. the stem or the leaf could be the main digit or digits
of the quantity.
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. primarily based on
the imply deviation.
c. of the symmetry of a distribution. d. primarily based on the center
50 % of the observations.
______9. A field plot is predicated on:
a. the imply. b. percentiles.
c. deciles. d. the primary and third quartile, the median, the
most and the minimal.
______ 10. The interquartile vary is predicated on:
a. the median. b. the imply deviation.
c. the sq. of the imply deviation. d. the center 50
% of the observations.
Half I.B. Resolve the next gadgets and write the proper
solutions on the areas supplied. (.25 POINTS FOR EVERY CORRECT ANSWER)
____________ 11.5 youngsters have heights of 138 cm, 135
cm, 140 cm, 139 cmand 141 cm. What’s the
vary of their heights?
____________ 12.What’s the vary of the next
numbers:19, 21, 18, 17, 18, 22, 46?
____________ 13. What’s the median within the following
numbers:19, 21, 18, 17, 18, 22, 46?
____________ 14.Waleed took 9 assessments in numerous topics
and received scores of 68, 71, 71,84, 53, 71, 62, 67.
What was Walled’s mode rating?
____________ 15. In a set of scores, the worth 93 appeared
twice, greater than some other quantity. What’s the
mode rating?
____________ 16. The temperature in levels Celsius over four
days in April was 28, 21,19 and 30. What was
the imply temperature?
The weekly salaries of six workers at a restaurant are
$180, $220, $98, $180, $140, $200. For these six salaries, discover:
_____________17. the median
_____________ 18. the mode
_____________19.A storeowner stored a tally of the sizes of
fits bought in her retailer. Which measure of central tendency ought to the
storeowner use to explain the typical measurement swimsuit offered?
_____________20.A tally was made from the variety of occasions every
colour of crayon was utilized by a kindergarten class. Which measure of central
tendency ought to the trainer use to find out which colour is the favourite colour
of her class?
_____________ 21.The science take a look at grades are posted. The
class did very properly. All college students taking the take a look at scored over 75.
Sadly, four college students have been absent for the take a look at and the pc listed
their scores as zero till the take a look at is taken. Assuming that no rating repeated extra
occasions than the zero’s, what measure of central tendency would most definitely give the
greatest illustration of this information?
A card is chosen at random from a deck of 52 taking part in playing cards.
There are four Queens and four Kings in a deck of taking part in
playing cards.Utilizing these DATA, reply questions 18.
_____________22.What’s the chance it’s a Queen or a
King?
_____________23.There are four Queens and four Kings, so the
Variety of methods it will probably occur is__.
_____________24.There are 52 playing cards altogether, so the Complete
variety of outcomes is______
_____________25.The chance the cardboard is both a Queen
or a King is___
DESCRIBE HOW A FREQUENCY DISTRIBUTION IS PREPARED:
__________________________________________________________________________________________________
__________________________________________________________________________________________________
Half II Present your whole work. Write the solutions within the
areas supplied.
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 pattern of 30 college students in one of many
topics of a sure College are proven within the desk.
Assemble a dot plot for the information.
| | | | | | | | | | | | | | | | | | | | | | |
STEM
LEAF
5
6 eight
6
1 2 2 four eight
7
zero four 6 6
eight
zero four four 6 6 6 6 6
9
zero 2 6
10
zero
2. The next stem and leaf plot reveals the scores on a
current examination of scholars in Statistics.
2.a.
2.a.What number of college students took the take a look at?
2.b.
2.b. What have been the best and lowest scores?
2.c.
2.c. What number of college students scored 70 or larger?
2.d.
2.d. What % of the scholars scored decrease than 70?
15
17
23
26
27
35
72
88
91
98
102
three. The revenues of the highest eleven private laptop
producers are given (in hundred hundreds of thousands).
three.a. Q1
three.b. Q3
three.c. M
three.a. Compute the primary quartile.
three.b. The third quartile.
three.c. Decide the median.
three.d. Draw a field plot for the information.
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