Average test 1-Solved questions with detailed explanations for SSC, IBPS, SBI PO, RRB, RBI, CSE, CGL, CHSL, CDA, CSE, UPSC

1)

Find the average of the set of scores 253, 124, 255, 534, 375, 101, 443, 760?

[BOB(PO), 2010]

A)
427
B)
413
C)
141
D)
490
E)
None of these

Answer: Option E

Explanation

Given set of scores= 253, 124, 255, 534, 375, 101, 443, 76

We know the formula,

$Average (A) = \frac{Sum of given values (S)}{Total number of values (N)}$

Here,

Sum of given values(S)

=253+124+255+534+375+101+443+760

= 2845

Total number of values(N)= 8

Substituting these values we get (A),

$= \frac{2845}{8} = 355.65$

Hence, Option E is correct.

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Discussion

2)

Find the average of the set of scores 124, 856, 331, 227, 963, 338, 259 and 662.

[Syndicate Bank 2009]

A)
570
B)
660
C)
141
D)
350
E)
None of these

Answer: Option E

Explanation

Given set of scores= 124, 856, 331, 227, 963, 338, 259 and 662

We know the formula,

$Average (A) = \frac{Sum of given values (S)}{Total number of values (N)}$

Here,

Sum of given values(S)

=124+856+331+227+963+338+259+662

= 3760

Total number of values(N)= 8

Substituting these values we get (A),

$= \frac{3760}{8} = 470$

Hence, Option E is correct.

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Discussion

3)

Find the average of the set of scores : 566, 455, 678, 989, 342, 715.

A)
590
B)
555
C)
624.16
D)
513
E)
None of these

Answer: Option C

Explanation

Given set of scores= 566, 455, 678, 989, 342, 715

We know the formula,

$Average (A) = \frac{Sum of given values (S)}{Total number of values (N)}$

Here,

Sum of given values(S)

= 566+455+678+989+342+715

= 3745

Total number of values(N)= 6

Substituting these values we get (A),

$= \frac{3745}{6} = 624.16$

Hence, Option C is correct.

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Discussion

4)

The ages of Rani, Glory, Pinky, and Minky are 20 yr, 15 yr, 5 yr and 8 yr, respectively. What is the average age of these four girls?

A)
12 yr
B)
15 yr
C)
18 yr
D)
13 yr
E)
None of these

Answer: Option A

Explanation

Given ages of Rani, Glory, Pinky, and Minky are 20 yr, 15 yr, 5 yr and 8 yr

We know the formula,

$Average (A) = \frac{Sum of given values (S)}{Total number of values (N)}$

Here,

Sum of given ages (S)

= 20+15+5+8

= 48

Total number of (N)= 4

Substituting these ages we get (A),

$= \frac{48}{4} = 12$

Hence, Option A is correct.

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Discussion

5)

Find out the average of 308, 125, 45, 120 and 102.

A)
80
B)
120
C)
140
D)
150
E)
None of these

Answer: Option C

Explanation

Given averages are 308, 125, 45, 120 and 102.

We know the formula,

$Average (A) = \frac{Sum of given values (S)}{Total number of values (N)}$

Here,

Sum of given values (S)

= 308+125+45+120+102

= 700

Total number of (N)= 5

Substituting these values we get (A),

$= \frac{700}{5} = 140$

Hence, Option C is correct.

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Discussion

Average Test-1 (Calculating average of given set of data)

Answer: Option E

Answer: Option E

Answer: Option C

Answer: Option A

Answer: Option C