PSYCHOLOGICAL STATISTICS

Transcription

1 UNIVERSITY OF CALICUT SCHOOL OF DISTANCE EDUCATION B Sc COUNSELLING PSYCHOLOGY (2011 Admission Onwards) II Semester Complementary Course PSYCHOLOGICAL STATISTICS QUESTION BANK 1. The process of grouping the related data in to classes is called (a) Collection (b) Tabulation (c) Grouping (d) Classification 2. Non-measurable characteristics of data are called (a) Variables (b) Attributes (c) Features 3. Measurable characteristics of data are called (a) Variables (b) Features (c) Attributes (d) Characteristics 4. If the upper limit of a class and lower limit of the next class in a class interval are the same, it is a/an (a) Inclusive Class Interval (b) Exclusive Class Interval (c) Cumulative Class Interval (d) Statistical class interval 5. Two-dimensional diagrams are also called (a) Pictograms (b) Area diagrams (c) Pie diagrams (d) Cartograms Psychological Statistics Page 1

2 6. When the aggregate and their divisions are to be shown together, the diagram used is (a) Histogram (b) Bar diagram (c) Pie diagram (d) Square diagram 7. Cumulative frequency curve is also called (a) Line graph (b) Frequency polygon (c) Ogive 8. Frequency polygon is called (a) Frequency curve (c) Histogram (b) Line graph (d) Ogive 9. If the highest frequency of a frequency distribution occurs at the lowest values or highest values, the distribution is (a) Symmetrical (b) Normal curve (c) Skewed (d) Non-skewed 10. Lack of symmetry is called (a) Kurtosis (c) Skewness (b) Dispersion (d) Either (a) or (b) 11. The sum of squares of deviations of a set of numbers from their mean is the property of (a) Arithmetic mean (b) Geometric mean (c) Harmonic mean (d) Combined mean 12. is a positional average. (c) Mode (d) MD 13. Value of an item which occurs more frequently than others is (a) Average (b) Mean (c) Median (d) Mode Psychological Statistics Page 2

3 14. In a moderately asymmetrical distribution median mode (b) Mean= median mode (c) Mean median = mode (d) Mean= median = mode 15. Histograms are drawn for (a) Discrete series (c) Both (a) and (b) (b) Continuous series (d) Either (a) or (b) 16. Histogram is useful to locate graphically the value of (a) Arithmetic mean (c) Mode (d) Geometric mean 17. The sum of squares of deviation is least when measured from (a) Zero (b) Mean (c) Median (d) Mode 18. Stsndard deviation is defined as of deviations taken from the value of mean (b) Mean of deviations taken from value of median (c) Square root of average of squares of deviations taken from the value of mean (d) Square root of average of squares of deviations taken from the value of median (e) 19. The value of median is diagrammatically calculated by drawing (a) Histogram (b) Ogive (c) Frequency polygon (d) Line graph 20. In a positively skewed distribution > median > mode (c) Mean > median < mode (b) Mean < median < mode 21. is a relative measure of variation based on standard deviation. (a) Quartile deviation (b) Mean deviation (c) Coefficient of variation (d) Variance Psychological Statistics Page 3

4 22. The value of an item which occupies the central position when the items are arranged in the ascending or descending order is (b) Mode (c) Median (d) Average 23. In discrete series, items having frequency is taken as mode. (a) Highest (b) Lowest (c) Medium (d) Average 24. Measure of variation of the items from some central value is referred to as (a) Deviation (b) Dispersion (c) Difference (d) Doth (a) and (c) 25. Which of the following is not a measure of dispersion? (a) Range (b) Quartile deviation (c) Median (d) Mean deviation 26. is the simplest possible measure of dispersion. deviation (b) Quartile deviation (c) Standard deviation (d) Range 27. is defined as half the distance between the third quartile and the first quartile. (a) SD (b) QD (c) MD (d) range 28. is defined as the arithmetic mean of deviations of all items in a series from their average. (a) Quartile deviation (b) Mean deviation (c) Range (d) Standard deviation 29. The standard deviation of the series 5, 8, 7, 11, 9, 10, 8, 2, 4, 6 is (a) (b) (c) (d) 2.7 Psychological Statistics Page 4

5 30. The mean deviation from mean for the values 25, 63, 85, 75, 62, 70, 83, 28, 30, 12 is (a) (b) (c) (d) Standard deviation when expressed as percentage ratio to we get coefficient of variation. (c) Coefficient of MD (d) Coefficient of SD 32. While finding deviation from average, the sign is ignored in (a) Standard deviation (b) Mean deviation (c) Quartile deviation (d) Coefficient of mean deviation 33. Standard deviation for a set of equal value is (a) 1 (b) 2 (c) 3 (d) If N=10, mean=12, x 2 = 1530, the co-efficient of variation is (a) 20 (b) 15 (c) 25 (d) In a symmetrical frequency distribution, the number of items above and below the mean would be (a) Same (b) Not the same (c) Equal to the mean (d) More or less same 36. In a symmetrical distribution, mean, median and mode lie at the of the distribution (a) Left (b) Right (c) Centre (d) Either (a) or (b) 37. For a symmetrical distribution, Q 3 and Q 1 are equidistant from the (c) Mode (d) Standard deviation Psychological Statistics Page 5

6 38. For a skewed distribution, Q 1 and Q 3 will not be equidistant from (c) Mode (d) Mean deviation 39. If mean > median > mode, then skewness is said to be (a) Positive (b) Negative (c) Zero (d) In a negatively skewed distribution > median > mode (c) Mean = median = mode (b) Mean < median < mode 41. If a distribution is skewed to the left, the distribution is said to have skewness (a) Positive (b) Negative (c) Zero (d) deals with the spread of individual values from an average (a) SD (b) MD (c) QD (d) dispersion 43. is a measure of peakedness of a frequency curve (a) Skewness (b) Kurtosis (c) Deviation (d) Dispersion 44. When a frequency curve is more peaked than normal curve it is (a) Meso kurtic (b) Lepto kurtic (c) Platy kurtic 45. The frequency curve having a flat top than a normal curve is called (a) Lepto kurtic (b) Meso kurtic (c) Platy kurtic (d) Normal curve 46. When a curve is neither peaked nor flat topped, it is called (a) Platy kurtic (b) Meso kurtic (c) Lepto kurtic Psychological Statistics Page 6

7 47. Normal curves are also called curves. (a) Lepto kurtic (b) Platy kurtic (c) Meso kurtic 48. Qualitative observation of elementary units are called (a) Variables (b) Attributes (c) Data (d) Strata 49. A characteristic that may take on different values at different times, places and situations is (a) Attribute (b) Data (c) Strata (d) Variable 50. A collection of raw facts or related observation is called (a) Data (b) Strata (c) Variable (d) Attribute 51. Data collected by the investigator for the first time which is original in character is (a) Primary data (b) Secondary data (c) Tertiary data 52. It is preferable to use primary data because it is (a) More reliable compared to secondary data (b) It contains less errors compared to secondary data (c) Original in character (d) All the above 53. The point at which the less than ogive curve and the more than ogive curve intersect is the value of (c) Quartiles (d) Percentiles 54. The most stable measure of central tendency is (a) The mean (b) The median Psychological Statistics Page 7

8 (c) The mode 55. is the most stable and reliable measure of dispersion. (a) Standard deviation (b) Mean deviation (c) Range (d) Coefficient of variation 56. The median of the following data is Marks : No. of students : (a) 17 (b) 18 (c) 19 (d) Calculate the value of mode of the following data: Marks Members (a) 40 (b) 25 (c) 20 (d) For a frequency distribution, what will be the mean if median=132.8 and mode=141.3? (a) (b) (c) 120 (d) is a diagram that contains rectangles of equal width and of length proportional to the values they represent. (a) Histogram (b) Bar diagram (c) Pie diagram (d) Area diagram 60. Difference between the largest and smallest values of the distribution is called (a) SD (b) MD (c) Range (d) Dispersion 61. Mean deviation is also called (a) Standard deviation (c) Range (b) Average deviation (d) Quartile deviation Psychological Statistics Page 8

9 62. The quartile deviation for the values 28, 32, 25, 42, 55, 82, 10, 25, 40, 38, 39 is (a) 8.5 (b) 6.5 (c) 7.5 (d) variance is the square of deviation (c) Semi inter quartile range (b) Mean (d) Standard deviation 64. when mode is illdefined, it is calculated using the formula mode= - 2 mean. (a) 2 median (b) 4 median (c) 3 median (d) 5 median 65. Among the following is not a method of collecting primary Data. (a) Direct personal interviews (b) Mailed questionnaire method (c) Information from correspondents (d) Official publications Psychological Statistics Page 9

10 ANSWERS 1(d) 6(c) 11(a) 16(c) 21(c) 26(d) 31(a) 36(c) 41(b) 46(b) 51(a) 56(c) 61(b) 2(b) 7(c) 12(b) 17(b) 22(c) 27(b) 32(b) 37(b) 42(d) 47(c) 52(d) 57(d) 62(a) 3(a) 8(b) 13(d) 18(c) 23(a) 28(b) 33(d) 38(a) 43(b) 48(b) 53(b) 58(a) 63(d) 4(b) 9(c) 14(a) 19(b) 24(b) 29(a) 34(c) 39(a) 44(b) 49(d) 54(a) 59(b) 64(c) 5(b) 10(c) 15(b) 20(a) 25(c) 30(b) 35(a) 40(b) 45(c) 50(a) 55(a) 60(c) 65(d) Psychological Statistics Page 10