# Statistics and Psychophysics BA Lucknow University 2007 Question Paper

B.A ( Part I) Examination 2007
Psychology
University /Board: Lucknow University
Course: B.A Psychology
Second Paper (Statistics and Psychophysics)
Question Paper Description: 2007 Lucknow University Philosophy and Psychology B.A Second Paper (Statistics and Psychophysics) Question Paper Free Download
Time Allowed : Three Hours
Maximum Marks:35

Note: Total Number of questions to be answered is Five. Question no. 1 is compulsory.Attempt one question from each unit.Each question of the unit carries 5 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 average error methods
(ix) Range of Correlation
(x) Standard Deviation

UNIT I
2.Compute mean from the following 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. Calculate Quartile Deviation for the following data.Also explain briefly when should Q be calculated.
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 8 boys and 5 girls.The data are given below:(a) What is meant by significance of difference means?(b) Is the difference between means of the two 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 ; find out:(a)The number of individual falling between 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 types 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 five stimuli from the frequency data given below 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 law.