|
9. Answer the
following, by expanding
or explaining (answer to
each question should be
in about 20
words):
5x2=10
(a)
OAPEC
(b)
IFAD
(c)
UPU
(d)
SAVE
(e)
ODA
10. Answer any one
of the following in
about 250 words:
30
(a)
Describe the
sources of ionizing and
non-ionizing radiations
and their effects on the
biotic components of the
atmosphere.
(b)
What is digital
convergence? Examine its
implications for modern
society.
11. Answer any two
of the following (answer
to each question should
be in about 150
words):
2x15=30
(a)
Why do
environmentalists regard
asbestos and polythene
as pollutants?
(b)
What is
therapeutic cloning?
Describe briefly the
method and its potential
applications.
(c)
Why is hydrogen
being acclaimed as the
fuel of the future?
12. Answer the
following (in about 20
words each):
5x2=10
(a)
What is an
exabyte?
(b)
What is VIRUS?
(c)
What do the
following stand for
(i)
XML
(ii)
MASER
(iii)
SECAM
(iv)
TIPS
(d)
What is avatar?
(e)
What is Wikipedia?
13.(a) Put the following
information into a
frequency distribution
table, assuming the
range of monthly wage is
from Rs.300 to rs.4500,
and draw a histogram on
a graph
paper:
�10%, 30%,
60%, 80% and 90% of a
group of monthly wage
earners receive less
than Rs.600, Rs.1000,
Rs.1800, Rs.2800 and
Rs.3300 respectively and
5% receive Rs,. 3600 and
above.�
(b) The marks
obtained by 32 student
of 12th class
of a government school
are:
628, 665, 560,
328, 421, 525, 480, 470,
405, 421,
664, 668, 620,
300, 305, 520, 420, 370,
326, 440,
328, 480, 565,
650, 480, 360, 325, 450,
360, 426,
440, 306.
Form a
Cumulative Frequency
Table with class
interval of 50.
14. (a) Represent the
following data by a
histogram:
|
Daily Earning (Rs.) |
No. of Stores |
|
0 � 50 |
3 |
|
50 � 100 |
7 |
|
100 � 150 |
4 |
|
150 � 200 |
5 |
|
200 � 250 |
4 |
|
250 � 300 |
3 |
|
300 � 350 |
2 |
|
350 � 400 |
2 |
(b) Construct a
cumulative frequency
distribution table from
the following frequency
distribution and find
the number of students
obtaining below 15
marks:
|
Marks |
Frequency |
|
0 � 5 |
4 |
|
5 � 10 |
12 |
|
10 � 15 |
10 |
|
15 � 20 |
8 |
|
20 � 25 |
3 |
|
25 � 30 |
2 |
15. (a) A train travels
first 300 kilometres at
an average speed of 30
kmph and further travels
the same distance at an
average speed of 40 kmph.
What is the average
speed over the whole
distance?
(b) The arithmetic
mean of 12 observations
was computed to be 6.
Afterwards, it was found
that one of the figures
was wrong. Instead of 7
(seven, which is the
correct figure). Find
the correct value of the
arithmetic mean after
corporating this
information
(c) A firm of
readymade garments makes
both men�s and women�s
shirts. Its average
profit is 6% of sales.
Its profits in men�s
shirts average 8% of
sales and women�s shirts
comprise 60% of output.
What is the average
profit per sales rupee
in women�s shirts?
(d) the mean and
variance of two sets
ofdata are given below
along with the data
size:
|
|
Ata Size |
Mean |
Variance |
|
I |
12 |
64 |
23 |
|
II |
9 |
72 |
18 |
What can you
say about the mean and
variance of the combined
set of observations as
compared to the
individual means and
variances without
performing any
calculation?
Do
check references
provided by Google on
the page, .. they also
provide useful
supplements
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