251. The device to measure the differences in the magnitude of a group of related variable is called

(a) Regression

(b) Index number

(c) Correlation

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(d) None of the above

252. The final result of a study will be more accurate if the sample drawn is

(a) Fixed by quota

(b) Taken randomly

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(c) Representative to the population

(d) Purposive

253. The research antagonistic to ex-post facto research is:

(a) Experimental studies

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(b) Library researches

(c) Normative researches

(d) All of the above

254. Validity of a research can be improved by

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(a) Taking the true representative sample of the population

(b) Eliminating extraneous factors

(c) Both of the above measures

(d) None of these

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255. If N = 80, D2 shall lie in

(a) 18th item

(b) 16th item

(c) 15th item

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(d) 14th item

256. The problem solving method is the teaching of any subject is best adopted when

(a) The problem is selected out of the initiative of the teachers

(b) The students can solve the problem by his previous knowledge

(c) The problem is presented in the form of an assignment by the teacher

(d) The student’s previous knowledge is in sufficient and the solution is possible only after acquiring new knowledge

257. Attributes of objects, events or things which can be measured are called

(a) Data

(b) Qualitative measure

(c) Variables

(d) None of the above

258. In plotting a frequency polygon, it is important to see that

(a) Each chases interval is represented by separate rectangle

(b) Midpoint of all class intervals are joined together

(c) The midpoint of an interval is at taken to represent the entire interval

(d) None of the above

260. Independent variables are not manipulated in

(a) Ex-post facto researches

(b) Normative researches

(c) Both of the above

(d) None of the above

261. All are examples of qualitative variables except

(a) Sex

(b) Religion and castes

(c) Observation

(d) Interest of the subject

262. The review of the related study is important while undertaking a research because

(a) It helps in understanding the gaps

(b) It avoids repetition or duplication

(c) It helps the researcher not to draw illogical conclusions

(d) All of the above

263. A researcher divides the populations into PG, graduates and 10 + 2 students and using the random digit table he selects some of them from each. This is technically called

(a) Stratified sampling

(b) Stratified random sampling

(c) Representative sampling

(d) None of these

264. To measure the changed purchasing power of currency, the index number that is used is called

(a) Cost of living index

(b) Quantity index

(c) Both a & b

(d) None

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

(a) A random sample

(b) A cluster sample

(c) A stratified sample

(d) A systematic sample

266. The process not needed in experimental researches is

(a) Controlling

(b) Observation

(c) Manipulation and replication

(d) Reference collection

267. The experimental study is based on the law of

(a) Replication

(b) Single variable

(c) Occupation

(d) Interest of the subject

268. The period against which comparisons are made in Index number is called

(a) Current year

(b) Base year

(c) Coming year

(d) None

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

(a) Sample parameter Y275. Area (cluster) sampling technique is used

(b) Inference when

(c) Statistics

(d) None of these

270. Field study is related to

(a) Real life situations

(b) Laboratory situations

(c) Experimental situations

(d) None of the above

271. The other name of independent variable for an experimental research is/are

(a) Experimental variable

(b) Treatment variable

(c) Manipulated variable

(d) all of the above

272. The approach to the concept of learning was different for Dewey and White Head in the following sense

(a) Dewey thought of learning in pragmatic terms whereas White Head thought in terms of cultural aspects

(b) Deweys approach was logical whereas White Head’s approach was philosophical

(c) Dewey thought of learning as an end in itself whereas White Head thought about it as a means

(d) Dewey thought of learning in experimental terms while White Head thought of it in more aesthetic terms.

273. If the sample drawn does not specify any condition about the parameter of the population, it is called

(a) Selected statistics

(b) Distribution free statistics

(c) Census

(d) None of the above

276. Which of the following will be acceptable for establishing a fact?

(a) Traditionally in practice over a long period of time

(b) Opinion of a large number of people

(c) Availability of observable evidence

(d) Reference in the ancient literature

277. Which of the following is a non-probability sample?

(a) Simple random sample

(b) Quota sample

(c) Purposive sample

(d) (a) and (c) both

278. A cumulative frequency is drawn on the basis of

(a)Adding the scores of the distribution intervals survey and plotting there added frequency point at the upper ends of the intervals.

(b) Find out the percentages of frequencies of class intervals and plotting this percentage on the upper limit of the intervals.

(c)Putting the total as frequency members at the mid points of class intervals and joining them progressively.

(d) Something the mid points of frequency polygons against the cumulative frequencies of class intervals

279. The problem which of the following type of desks would you prefer as being convenient for students to write?

(a) The minus desk

(b) The flat desk

(c) The plus desk

(d) The zero desks

280. The plus two stage in our education ladder, is intended to

(a) Provide for education as a substitute for the earlier intermediate education

(b) Be devoted for purely diversified vocational courses

(c) Divert a part of students towards vocational courses

(d) All of the above

281. Generalised 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

282. Which of the following assumptions would be correct from a statistical point of view?

(a) Errors of observation will have frequencies that cannot approximate the normal probability curve

(b)Linear magnitudes have measured frequencies closely following the normal probability curve.

(c) Measures of physical and mental traits cannot be accepted to follow the normal probability curve.

(d)Linear magnitudes have measured frequencies that are always skewed.

283. The device through which the functional relationship is studied and forecasting is made is called

(a) Correlation

(b)Regression

(c) Time series

(d)None of the above

285. The quartile deviation includes the

(a) Last 50 per cent

(b) First 50 per cent of the items

(c) All the items

(d) Central 50 per cent

286. Standard deviation is always computed from

(a) Mean

(b) G.m.

(c) Median

(d) Mode

287. Which of the following measures is least affected by extreme items:

(a) Range

(b) Quartile deviation

(c) Standard deviation

(d) Mean deviation

289. Which of the following is a computed measure of absolute variation?

(a) Range

(b) Standard deviation

(c) Quartile deviation

(d) all of them

290. A good researcher lays his hands on

(a) A specific area and tries to understand it in minute details

(b) Any area as long as manpower and findings are available in plenty

(c) Several areas and tries to understand them at’ fundamental level.

(d) All the above

291. Harmonic mean of a series of data is

(a) The reciprocal of the arithmetic average of the reciprocals of the values of its various items

(b) Always ill-defined

(c) The reciprocal of the arithmetic average of the values of various items

(d) None of the above

292. The speed of Rajdhani Express, Tamilnadu Express and Kerala Express are 250 km, 200 km and 175 km per hour respectively. A passenger travelled 4800 km by Rajdhani, 3000 by TN Express and 2500 km by Kerala Express. The coverage of distance per hour is

(a) 200.17 km.

(b) 217.17 km.

(c) 212.37 km.

(d) 207.60 km.

293. If by obtaining two curves one for X variable and other for Y variable we see the both curves moving in the same direction, it indicates

(a) Positive correlation

(b) Negative correlation

(c) Partial correlation

(d) None of the above

294. The nature of relationship is studied through

(a) Co-relation

(b) Regression

(c) Progression

(d) None of the above

295. Mean deviation is standard deviation

(a) Less than

(b) Equal to

(c) Not related to

(d) More than

296. Which of the measures of dispersion is more useful in case of open-end distributions?

(a) Average deviation

(b) Range

(c) Standard deviation

(d) Quartile deviation

298. When the average value of a number of years is taken as a trend to plot a trend line it is called

(a) Semi Average method

(b) Moving Average Method

(c) Both a & b

(d) None of the above

299. The following measure of central tendency cannot be represented graphically

(a) Arithmetic mean

(b) Mode

(c) Median

(d) Quartile

Answers:

251.

(b)

252.

(c)

253.

(a)

254.

(c)

255. (b)

256.

(d)

257.

(c)

258.

(b)

260. (c)

261.

(d)

262.

(d)

263.

(b)

268.

(b)

269.

(c)

270. (a)

276.

(c)

277.

(d)

278.

(a)

279.

(a)

280. (c)

281.

(a)

282.

(b)

283.

(b)

285. (d)

286.

(a)

287.

(c)

289.

(b)

290. (a)

291.

(a)

292.

(c)

293.

(a)

294.

(b)

295. (a)

296.

(d)

298.

(b)

299.

(a)

300. (a)