📏 Arithmetic Aptitude Solved MCQs with Answers

Practice 3559 approved 📏 Arithmetic Aptitude questions with verified answers from the 🧠 Aptitude Mastery subject for Pakistan exams.

3559 solved MCQs

X is a uniform variate between 0 and 3. The value of E(X²) is?Answer: 3 Which of the following is not a measure of dispersion?Answer: Second Quartile What will be properties of the OLS estimator in the presence of multicollinearity?Answer: It will be consistent unbiased and efficient Which of the following is true for the coefficient of correlation?Answer: The coefficient of correlation does not depend on both the change of scale and change of origin Which of these can be used to develop a new process?Answer: Design of experiments The dependence of a variable on two or more than two independent variable, the relation is said to be _____?Answer: Multiple regression The standard deviation of a sample of 100 observations equals 64. The variance of the sample equals?Answer: 4096 Emma likes to play cards. She draws 5 cards from a pack of 52 cards. What is the probability that from the 5 cards drawn Emma draws only 2 face cards?Answer: 0.0753 Which of the following value is used as a summary measure for a sample?Answer: Sample statistic In Cramer-Rao Inequality var (T) is called?Answer: Minimum variance bond If the mean (m) of a Poisson distribution is 1, then the probability of P(1) is?Answer: 1/e If the member of unknowns are greater than number of equations, we use as the method for estimation?Answer: Least square method for estimation If 'm' is the mean of a Poisson Distribution, then variance is given by?Answer: m Which of the following is NOT a basic principle of experimental design?Answer: Confounding Rao-Black well theorem enables us to obtain minimum variance unbiased estimate through _______?Answer: Sufficient statistics Geometric random variable P(X = n) =(1-p)^(n-1) p, holds?Answer: Independent trails and n = 1, 2, 3,..... What is the sum of deviations from the regression line?Answer: Zero The error of rejecting the null hypothesis when it is true is known as?Answer: Type-1 error To find the average speed of a journey, which is the appropriate measure of central tendency?Answer: Harmonic Mean If K denotes the degree of freedom, then the variance of Chi-square distribution is?Answer: 2k What is the difference between a sample statistic and the population parameter?Answer: Sampling error The probability of getting 3 tails when balanced coins are tossed once?Answer: 1/8 Which of the following statements about the Central Limit Theorem (CLT) is correct?Answer: The CLT states that the sampling distribution of the sample mean x is approximately normal, for large sample sizes (n>30) Which of the following is the correct statement regarding the coefficient of correlation?Answer: It is independent of both the scale and origin When 1/4 of a number is subtracted from 1/3 of the same number, the reminder obtained is 12. The number is?Answer: 144 A million has __ zeros?Answer: 6 A student obtained 20% of marks and failed by 50 marks from passing marks another student obtained 40% marks and get 30 marks more than the passing marks Find the total marks in exam:Answer: 400 Sanwal ranks 17th from the top and 15th from the bottom of list respectively,total number of students in the class are :Answer: 31 The median of 6,8,10,12,14 and 16 is:Answer: 11 "A” is two years older than “B” who is twice as old as “C”.If the total ages of A, B and c be 27, than how old is B?Answer: 10