ZPHSBALEMLA , SURYAPET

SURYAPET AND KHAMMAM DISTRICTS COMMON SSC PRACTICE TEST

MATHEMATICS (STATISTICS)

Marks: 20 Time : 60min.

SECTION-1

Note: Answer all questions. Each question carries one mark 4X1 = 4

1. If the mean of -1, -2, -3, p is zero then find the value of p?

2. Find the median of factors of 108 ?

3. What is the mode of first n natural numbers?

4. Write the properties of ogive curve?

SECTION-2

Note: Answer all questions. Each question carries two marks 3X2 = 6

5. Write the formula of median for grouped data. Explain the terms

in words?

6. Find the median of

7. Find the mean of the numbers from 1 to 50 that are divisible by 7 ?

SECTION-3

Note: Answer all questions. Each question has internal choice.

Each question carries four marks 2X4 = 8

8. (a) Find the mode of the following data.

*Class interval*	*50-52*	*53-55*	*56-58*	*59-61*	*62-64*
*Frequency*	15	*110*	*135*	*115*	25

(OR)

(b).Find the mean of the following data by using step deviation method

*Class interval*	*5-15*	*15-25*	*25-35*	*35-45*	*45-55*	*55-65*
*Frequency*	6	11	21	23	14	5

9. (a) Draw the ogive curves of the following data and find the median of

the data

*Class interval*	*5-10*	*10-15*	*15-20*	*20-25*	*25-30*
*Frequency*	4	45	20	13	9

(OR)

(b) Find the median of the following data

*Class interval*	*0-10*	*10-20*	*20-30*	*30-40*	*40-50*	*50-60*	*60-70*
*Frequency*	4	4	8	10	12	8	4

Part-B

Note: Answer all questions. Each question carries

mark. 4x

1. The mode of 2,3,5,2,3,5,7,3,9,3,11,10 is [ ]

A) 2 B) 3 C) 5 D)

2. The mean of x scores is y then sum of the scores is [ ]

A) x+y B)

C) x.y D) x-y

3. Which of the measure of central tendency is most reliable [ ]

A) Mean B) Median C)

Mode D) Range

4. The mid value of 10-19 class [ ]

A) 9.5 B) 19.5 C)

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