MCQ SAMPLING AND SAMPLING DISTRIBUTIONS. MCQ 11.2 Any population constant is called a: (a) Statistic (b) Parameter (c) Estimate (d) Estimator

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1 MCQ SAMPLING AND SAMPLING DISTRIBUTIONS MCQ 11.1 Sample is a sub-set of: (a) Population (b) Data (c) Set (d) Distribution MCQ 11.2 Any population constant is called a: (a) Statistic (b) Parameter (c) Estimate (d) Estimator MCQ 11.3 List of all the units of the population is called: (a) Random sampling (b) Bias (c) Sampling frame (d) Probability sampling MCQ 11.4 Any calculation on the sampling data is called: (a) Parameter (b) Static (c) (d) Error MCQ 11.5 Any measure of the population is called: (a) Finite (b) Parameter (c) Without replacement (d) Random MCQ 11.6 If all the units of a population are surveyed, it is called: (a) Random sample (b) Random sampling (c) Sampled population (d) Complete enumeration MCQ 11.7 Probability distribution of a statistics is called: (a) Sampling (b) Parameter (c) Data (d) Sampling distribution MCQ 11.8 The difference between a statistic and the parameter is called: (a) Probability (b) Sampling error (c) Random (d) Non-random MCQ 11.9 The sum of the frequencies of the frequency distribution of a statistic (a) Sample size (b) Population size (c) Possible samples (d) Sum of X values MCQ Standard deviation of sampling distribution of a statistic is called: (a) Serious error (b) Dispersion (c) Standard error (d) Difference MCQ If we obtain a point estimate for a population mean µ, the difference between and µ is: (a) Standard error (b) Bias (c) Error of estimation (d) Difficult to tell MCQ A distribution formed by all possible values of a statistics is called (a) Binomial distribution (b) Hypergeometric distribution (c) Normal distribution (d) Sampling distribution MCQ In probability sampling, probability of selecting an item from the population is known and is: (a) Equal to zero (b) Non zero (c) Equal to one (d) All of the above

2 MCQ A population about which we want to get some information is called: (a) Finite population (b) Infinite population (c) Sampling population (d) Target population MCQ The population consists of the results of repeated trials is named as: (a) Finite population (b) Infinite population (c) Real population (d) Hypothetical population MCQ A population consisting of the items which are all present physically is called: (a) Finite population (b) Infinite population (c) Real population (d) Hypothetical population MCQ Study of population is called: (a) Parameter (b) Statistic (c) Error (d) Census MCQ For making voters list in Pakistan we need: (a) Sampling error (b) Standard error (c) Census (d) Simple random sampling MCQ Sampling based upon equal probability is called: (a) Probability sampling (c) Simple random sampling (b) Systematic sampling (d) Stratified random sampling MCQ In sampling with replacement, an element can be chosen: (a) Less than once (b) More than once (c) Only once (d) Difficult to tell MCQ Standard deviation of sample mean without replacement standard deviation of sample mean with replacement: (a) Less than (b) More than (c) 2 times (d) Equal to MCQ In sampling without replacement, an element can be chosen: (a) Less than once (b) More than once (c) Only once (d) Difficult to tell MCQ In sampling with replacement, the following is always true: (a) n = N (b) n < N (c) n > N (d) All of the above MCQ Which of the following statement is true? (a) Standard error is always one (c) Standard error is always negative (b) Standard error is always zero (d) Standard error is always positive MCQ Random sampling is also called: (a) Probability sampling (b) Non-probability sampling (c) Sampling error (d) Random error MCQ Non-random sampling is also called: (a) Biased sampling (b) Non-probability sampling (c) Random sampling (d) Representative sample

3 MCQ Sampling error can be reducing by: (a) Non-probability sampling (c) Decreasing the sample size (b) Increasing the population (d) Increasing the sample size MCQ The selection of cricket team for the world cup is called: (a) Random sampling (b) Systematic sampling (c) Purposive sampling (d) Cluster sampling MCQ A complete list of all the sapling units is called: (a) Sampling design (b) Sampling frame (c) Population frame (d) Cluster MCQ A Plan for obtaining a sample from a population is called: (a) Population design (b) Sampling design (c) Sampling frame (d) Sampling distribution MCQ If a survey is conducted by a sampling design is called: (a) Sample survey (b) Population survey (c) Systematic survey (d) None MCQ The difference between the expected value of a statistic and the value of the parameter being estimated is called a: (a) Sampling error (b) Non-sampling error (c) Standard error (d) Bias MCQ The standard deviation of any sampling distribution is called: (a) Standard error (b) Non-sampling error (c) Type- I error (d) Type II-error MCQ Which of the following statement is not true? (a) S.E( ) 0 (b) S.E( ) 1 (c) S.E( ) = -2 (d) All of the above MCQ The standard error increases when sample size is: (a) Increase (b) Decrease (c) Fixed (d) More than 30 MCQ The mean of sampling distribution of mean (a) (b) µ (c) p (d) None of the above MCQ The mean of the sample means is exactly equal to the: (a) Sample mean (b) Population mean (c) Weighted mean (d) Combined mean MCQ (a) E( ) (b) µ (c) Both (a) and (b) (d) None of the above MCQ A sample which is free from bias is called: (a) Biased (b) Unbiased (c) Positively biased (d) Negatively biased MCQ If E( ) = µ then bias is: (a) Positive (b) Negative (c) Zero (d) 100%

4 MCQ (a) Unbiased sample variance (b) Population variance (c) Biased sample variance (d) All of the above MCQ (a) Unbiased sample variance (b) True variance (c) Biased sample variance (d) Variance of means MCQ The sampling procedure in which the population is first divided into homogenous groups and then a sample is drawn from each group is called: (a) Probability sampling (b) Simple random sampling (c) Stratified random sampling (d) Sampling with replacement MCQ When a random sample is drawn from each stratum, it is known as: (a) Simple random sampling (b) Stratified random sampling (c) Probability sampling (d) Purposive sampling MCQ When the procedure of selecting the elements from the population is not based on probability is known as: (a) Purposive sampling (b) Judgment sampling (c) Subjective sampling (d) All of the above MCQ Suppose a finite population has 6 items and 2 items are selected at random without replacement, then all possible samples will be: (a) 6 (b) 12 (c) 15 (d) 36 MCQ Suppose a finite population contains 7 items and 3 items are selected at random without replacement, then all possible samples will be: (a) 21 (b) 35 (c) 14 (d) 7 MCQ A population contain N item and all possible sample of size n are selected without replacement. The possible number of sample will be: (a) N (b) n N (c) N C n (d) N n MCQ Suppose a finite population contains 4 items and 2 items are selected at random with replacement, then all possible samples will be: (a) 6 (b) 16 (c) 8 (d) 4 MCQ A population contains 2 items and 4 items are selected at random with replacement, then all possible samples will be: (a) 16 (b) 8 (c) 4 C 2 (d) 4 MCQ Suppose a population has N items and n items are selected with replacement. Number of all possible samples will be: (a) N n (b) N C n (c) N (d) n MCQ In random sampling, the probability of selecting an item from the population is: (a) Unknown (b) Known (c) Un-decided (d) One MCQ If N is the size of the population and n is size of the sample, then sampling fraction is: (a) n N (b) N n (c) n/n (d) N C n

5 MCQ The finite population correction factor is: MCQ In sampling with replacement, the standard error of MCQ MCQ In sampling with replacement, the standard error of sample proportion MCQ MCQ If E( ) = 10 and µ = 10 then bias (a) 0 (b) 10 (c) 20 (d) Difficult to tell MCQ If = 10 and µ = 12 then sampling error (a) 22 (b) 10 (c) 12 (d) 2 MCQ The standard deviation of the distribution of sample means MCQ If n = 25, = 25 and = 25, then standard error of will be: (a) 25 (b) 5 (c) 1 (d) 0 MCQ If E(s 2 ) = 3 and = 2 then bias will be: (a) 5 (b) 3 (c) 2 (d) 1 MCQ In sampling without replacement, the standard error of sampling distribution of sample proportion to: is equal MCQ When sampling is done without replacement

6 MCQ In case of sampling with replacement MCQ The distribution of the mean of sample of size 4, taken from a population with a standard deviation, has a standard deviation of: MCQ In sampling with replacement MCQ When sampling is done with or without replacement, E( MCQ In case of sampling with replacement, Ε (S²) MCQ In sampling without replacement, the expected value of is S² MCQ When the sampling is done with replacement, then µ S2 MCQ In sampling without replacement, µ s² MCQ When sampling is done with or without replacement, MCQ If X represent the number of units having the specified characteristic and n is the size of the sample, then population proportion p MCQ If X represents the number of units having the specified characteristic and N is the size of the population, then population proportion p