University of Lucknow 2007 B.A Psychology , Second (Statistics and Psychophysics) - Question Paper

B.A ( Part I) exam 2007

Psychology
2nd Paper(Statistics and Psychophysics)

Time Allowed : 3 Hours
Maximum Marks:35

Note: Total Number of ques. to be answered is Five. ques. no. one is compulsory.Attempt 1 ques. fom every unit.Each ques. of the unit carries five marks.


1. Write short answers on the following: 15
(i) Model
(ii) Psychological scaling
(iii) Kurtosis
(iv) Level of significance
(v) J.N.N.D
(vi)Difference Limen
(vii)Critical Ratio
(viii)Errors in avg. fault methods
(ix)Range of Correlation
(x)Standard Deviation



UNIT I
2.Compute mean from the subsequent table by using short method.
CI f
66-71 1
60-65 16
54-59 13
48-53 13
42-47 17
36-41 33
30-35 32
24-29 32
18-23 23
12-17 24
6-11 7
0-5 1


3. compute Quartile Deviation for the subsequent data.Also discuss briefly when should Q be computed.
SCORES FREQUENCY
120-139 50
100-119 150
80-99 500
60-79 250
40-59 50

N=1000



UNIT II
4.A Personality inventory is administered to eight boys and five girls.The data are provided below:(a) What is meant by significance of difference means?(b) Is the difference ranging from means of the 2 groups significant at 0.05 level?
BOYS GIRLS
112 120
110 115
95 105
100 117
90
110
105

5. In a normal distribution if the mean score is 15.00 and S.D 2.5 ; obtain out:(a)The number of individual falling ranging from scores 10 and 20 (b) The number of individual falling above the score of 25



UNIT III
6.What do you understand by Psychophysics?Discuss the kinds of continua it employs.
7.Discuss in brief the errors involved in the use of method of limits.



UNIT IV
8.Compute the scale values of the 5 stimuli from the frequency data provided beneath using the method of paired comparison.
STIMULI A B C D E
A - 08 06 10 05
B 12 - 11 16 17
C 14 09 - 17 11
D 10 04 03 - 14
E 15 03 09 06 -

9.Elucidate the concepts of signal detection and power legal regulations.

Earning:   Approval pending.