Psychological Statistics Set 7

Bachelor of Science in Counselling Psychology (BSc Counselling Psychology)

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This set of Psychological Statistics Multiple Choice Questions & Answers (MCQs) focuses on Psychological Statistics Set 7

Q1 | The data obtained in an investigation by complete enumeration will be free from ……………
  • Sampling errors
  • Nonsampling errors
  • Both a and b
  • None of these
Answer: Sampling errors
Q2 | The first man to write a book on probability is
  • Galileo
  • Pierre De-Fermat
  • Demovire
  • Girolamo Cardano
Answer: Girolamo Cardano
Q3 | An outcome of an experiment is called
  • Event
  • Sample space
  • Sample
  • None of these
Answer: Event
Q4 | The oldest and simplest approach to probability is ……………
  • Empirical
  • Classical
  • Subjective
  • Axiomatic
Answer: Classical
Q5 | The probability of an event is defined as “the ratio of the number of ‘favourable’ cases to thetotal number of equally likely cases” in …………… approach.
  • Empirical
  • Classical
  • Subjective
  • Axiomatic
Answer: Classical
Q6 | Which of the following is the definition of probability of an event in subjective approach.
  • Limit of the relative frequency as the number of observation increases indefinitely
  • Probability assigned to an event by an individual based on whatever evidence is possible.
  • Probability can be calculated using certain axioms
  • None of these
Answer: Probability assigned to an event by an individual based on whatever evidence is possible.
Q7 | An event which may or may not occur while performing a certain random experiment isknown as
  • Sample space
  • Outcomes
  • Random event
  • None of these
Answer: Random event
Q8 | Those events which cannot happen simultaneously in a single trial are called ……….. events.
  • Equally likely
  • Mutually exclusive
  • Independent
  • Dependent
Answer: Mutually exclusive
Q9 | If the outcome of one event does not affect and is not affected by the other event, then thetwo events are called ……….. events.
  • Equally likely
  • Independent
  • Dependent
  • Mutually exclusive
Answer: Independent
Q10 | If the totality of events includes all the possible outcomes of a random experiment, then theevents are called …………….
  • Equally likely
  • Independent
  • Mutually exclusive
  • Exhaustive
Answer: Exhaustive
Q11 | An event A is said to be the complementary event of B if A and B are
  • Mutually exclusive
  • Equally likely
  • Exhaustive
  • Both a and c
Answer: Both a and c
Q12 | If two events A and B are independent then probability of A and B is given by
  • P(A and
  • 0
  • P(A and B) = P(A) X P(B)
  • None of these
Answer: P(A and B) = P(A) X P(B)
Q13 | Conditional probability can be defined when A and B are ……………… events
  • Mutually exclusive
  • Dependent
  • Independent
  • Exhaustive
Answer: Dependent
Q14 | greater percentage of cases distributed about the mean score4. lesser percentage of cases belonging to extreme scores
  • Only 1 and 2 are true
  • Only 3 and 4 are true
  • all are true
  • all are false
Answer: Only 3 and 4 are true
Q15 | Which of the following statements is incorrect?
  • As probability of Type I error increases, probability of type II error also increases.
  • As the probability of Type I error decreases, the probability of type II error increases.
  • As the probability of Type II error decreases, the probability of Type I error increases.
  • None of these
Answer: As probability of Type I error increases, probability of type II error also increases.
Q16 | Following data is related to emotional intelligence of two groups A and B.Mean SD N Group A 75 15 150 Group B 70 20 250 Then the critical ratio is given by
  • 2.53
  • 1.98
  • 2.84
  • None of these
Answer: 2.84
Q17 | Which of the following is the ‘t’ value for the following data (small independentsamples)X1= 12, X2 =11, n1 =5, n2=7, s1 = 1.12, s2 = 2.31
  • 8.9
  • 0.35
  • 0.89
  • 0.79
Answer: 0.89
Q18 | Degrees of freedom for testing the significance of correlation coefficient is calculatedusing the formula ------
  • n1 + n2
  • n-1
  • n -3
  • n-2
Answer: n-2
Q19 | Normal distribution was originally investigated by -------
  • Gauss
  • Laplace
  • DeMoivre
  • None of these
Answer: DeMoivre
Q20 | Normal distribution was defined specially by -------
  • Laplace
  • Gauss
  • DeMoivre
  • None of these
Answer: Laplace
Q21 | Which of the following is significance of normal distribution in statistical analysis?
  • Many of the dependent variables are commonly assumed to be normally distributed
  • Many of the statistical techniques in inferential statistics assumes normality of variable.
  • The theoretical distribution of the hypothetical set of sample means is approximately normal.
  • All of the above
Answer: All of the above
Q22 | The area under the normal curve between the ordinates x =  -  and x = + is
  • 68.26%
  • 95.44%
  • 34.13%
  • None of these
Answer: 68.26%
Q23 | The area under the normal curve between the ordinatesx =  - 2 and x = +2 is
  • 68.26%
  • 95.44%
  • 99%
  • None of these
Answer: 95.44%
Q24 | The area under the normal curve between the ordinatesx =  - 3 and x = +3 is
  • 68.26%
  • 95.44%
  • 99.73%
  • 90%
Answer: 99.73%
Q25 | The term skewness refers to -------
  • bulginess
  • lack of symmetry
  • symmetrical
  • normal
Answer: lack of symmetry
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