**300. The co-efficient value of co-relation lies between**

(a) 0 to 1

(b) 0 to -1

(c) -1 to 1

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(d) 1 – 10

**301. On matters of academics (knowledge) a researcher should consider himself as**

(a) Entirely dependent on the teacher

(b) Open minded and radical

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(c) Fairly knowledgeable

(c) A status quo maintainer

**302. Given the N values in a series, the geometric mean is**

(a) The third root of the product of N values.

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(b) The square root of the product of N values

(c) The fourth root of the product of N values

(d) The Nth root of the product of N values

**303. Which of the measures given here are based on every item of the series?**

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(a) Range

(b) Standard deviation

(c) Quartile deviation

(d) All of them

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**305. A researcher selects a probability sample of 100 out of the total population. It is**

(a) A cluster sample

(b) A random sample

(c) A systematic sample

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(d) A stratified sample

**306. If x is 4 and the distribution is 2, 3, 4, 5, 6, the sum of squared deviations from the x will be:**

(a) 8

(b) 10

(c) 6

(d) 12

**307. Generalized conclusion on the basis of a sample is technically known as**

(a) Statistical inference of external validity of the research

(b) Parameter inference

(c) Data analysis and interpretation

(d) All of the above

**308. A statistical measure based upon the entire population is called parameter while measure based upon a sample is known as**

(a) Sample parameter

(b) Inference

(c) Statistic

(d) None of these

**309. Who said that members of the same species are not alike?**

(a) Darwin

(b) Best

(c) Herbert Spencer

(d) Good

**310. If the scatter diagram is drawn and if the points come to a straight line it is an indication of**

(a) Skewness

(b) Perfect correlation

(c) No correlation

(d) None of the above

**312. A contractor employs 20 male, 15 female and 5 children in his factory. Male wages are Rs. 10 per day, female Rs. 8 per day, and children Rs. 3 per day. The weighted x of wages paid per day will be**

(a) 3.86

(b) 8.37

(c) 9.21

(d) 10.63

**313. If x is 48, Median is 47, Mode value will be**

(a) 44

(b) 50

(c) 45

(d) 49

**314. Find the median of the following data:**

160,180, 200, 280, 300, 320, 400

(a) 140

(b) 300

(c) 180

(d) 280

**315. A good teacher is one who**

(a) Publishes lot of research papers

(b) Reads a lot

(c) Teaches well

(d) Cooperates well with the principal

**316. Under a normal curve X + 3a covers**

(a) 99.37 percent

(b) 99.23 percent of area

(c) 99.73 percent

(d) 99.32 percent

**319. In a frequency distribution the last cumulative frequency is 300, Median shall lie in:**

(a) 140^{th} item

(b) 150^{th} item

(c) 160^{th} item

(d) 130^{th} item

**320. The average monthly production of a factory for the first 8 months is 2,500 units, the next 4 months 1,200 units, the average monthly production of the year will be**

(a) 2066.55 units

(b) 5031.10 units

(c) 4021.12 units

(d) 3012.11 units

**321. In a distribution of 10, 20, 30, 40, 50, the x is 30, the sum of deviations from x will be**

(a) 0

(b) 60

(c) 30

(d)15

**323. In a frequency distribution the last cumulative frequency is 500. Q _{3} must lie in :**

(a) 275^{th} item

(b) 375^{th} item

(c) 275^{th} item

(d) 175^{th} item

**324. In a week the prices of a bag of rice were 350,280,340,290,320, 310,300. The range is**

(a) 60

(b) 70

(c) 60

(d)100

**Answers:**

301. |
(b) |
302. |
d) |
303. |
(b) |
305. (b) |
||

306. |
(b) |
307. |
(a) |
308. |
(c) |
309. |
(a) |
310. (b) |

312. |
(b) |
313. |
(c) |
314. |
(d) |
315. (c) |
||

316. |
(c) |
320. (a) |
||||||

321. |
(a) |
323. |
(b) |
324. |
(b) |