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act. 1 act. 2 Instruction: Choose the letter of the correct answer then write it on a separate sheet HOODOOIDELL ( VOL 1 VOL f paper. 1. Which of the following is NOT a characteristic of a random sampling? Instruction: Choose the letter of the correct answer then write it on a separate sheet A. It gives an unreliable research result. of paper. It gives reliable result since it eliminates the idea of being bias. 1. How many possible samples of size 8 can be drawn from a population of C. It is a statistical technique used in selecting people or items for ize 12? research. A. 215 C. 495 . It makes sure that each person or item considered for research has B. 345 D. 625 an equal opportunity to be chosen as part of the group to be studied. 2. Which of the following symbols DOES NOT represent a sample statistic? 2. At a party, teams for a game are chosen by putting everyone's name into A.N C, $2 a jar, and then cho ach team. Whi following random sampling techniques is beir uniques is being illustrated? B.s D. X C. Simple Multistage D . Stratified 3. Mrs. Myrna, in her English class calls students to recite by drawing out index cards with the names of all her students written individually. Which sampling technique is practiced by Mrs. Myrna? . What counting principle is used to find the number of all possible samples taken from a population? A. Cluster Sampling C. Simple Random Sampling "C. Multiplication B. Combination D. Permutation B. Multistage Sampling D. Stratified Sampling . Which of the following statements is NOT TRUE? . How many possible random samples of size n-3 can be drawn from a A. Sampling error is the differ sample and population of size N-5? the mean of the population. A. 5 C. 15 3. The mean of the sample is either less B. 10 of the population. ater than the mean D. 20 C. The probability distribution of the sample means is called the . What do you call a number that describes a population characteristic? sampling distribution of the sample means. C. statistic D. The mean of the sample is always lesser than the mean of the B. parameter D. variable population. 5. Suppose the Department of Health recorded a total of 40,264 recovered 5. What should be the sum of all the probabilities of the mean in a sampling COVID-19 patients in a week, what is the average daily recovered patients for that week? A. lesser than C. exactly 1 C. 5,752 B. 5,432 D. 6,122 B. exactly 0 D. between 0 and 1 S. Which of the following probability of the sample mean P(X) makes the . Which of the following notations gives the number of possible samples of able below a sampling distribution of the sample means? size 4 taken from a population of size 8? A. Cs C. 4Ps B . .CA P(X ) 0.20 0.25 0.30 0.08 8.5 A. 0.07 C. 0.27 B. 0.7 D. 0.17 8. Which of the following statements about the sample mean is NOT TRUE? 7. Which of the following notations gives the number of possible samples of 1. The mean of the sample is always greater than the mean of the size 5 taken from a population of size 10? population. A. sC10 C. SP10 II. The mean of the sample is always lesser than the mean of the population. B. 10C D. 10P. III. The mean of the sample is either lesser than or greater than the mean of the population. 8. Which of the following is not a sample drawn from a population consisting of 1, 2, 3, 4, and 5? A. I only C. III only B. II only D. I and II. A. 1, 2, 3 C. 3, 3, 5 9. Which of the following values corresponds to P(12) to make the table a B. 2, 3, 4 . 3, 4, 5 sampling distribution of the sample means? 9. What do you call the probability distribution of the sample means? 12 P(X) 0.15 0.08 0.24 0.35 0.11 A. Parameter C. Sampling Distribution B. Random Sampling D. Sampling Error . 0.07 B. 0.17 C. 0.27 . 0.70 For numbers 10-15, refer to the sampling distribution given. 10. What type of error is the difference between the sample mean and the population mean? Means X Frequency Probability P(X) A. bias C. sampling 6 0.10 B. expected D. standard 8 0.20 0.40 1. Which of the following DOES NOT describe a 12 sampling distribution of 16 0.20 the means? 18 0.10 A. The total number of all p can be determined by N Total B. The sum of the probabilities of the sample means is exactly equal to 1. 10. What is the probability that the sample mean is greater than 12? C. The sum of the probabilities of the sample means is either lesser than A. 0.20 C. 0.40 or greater than 1. B. 0.30 D. 0.50 D. The means of the samples are t as the random variables of the 122 11. What is the probability that the sample mean is lesser than or equal to probability distribution. 12.A consumer group wanted to determine the most in demand brand of A. 0.30 C. 0.70 beauty products in the master ones first rented some districts B. 0.50 D. 0.90 conducted their research. What random sampling technique did the 12. What is the probability that the sample mean is lesser than 18? group apply? A. 0.30 C. 0.70 B. 0.50 D. 0.90 A. Clustered B. Multistag 13. What is the probability that the sample mean is greater than 8 but C. Simple lesser than 16? B. Stratified A. 0.40 C. 0.60 For numbers 13-15, refer to the sampling distribution given. Means.X Frequency Probability P(X) B. 0.50 D. 0.70 14. Which of the following histograms reflects the given sampling 8.5 distribution? 12 15 13. What is the probability that the sample mean is greater than 9? A. = C. ! B. D. 2 14. What is the probability that the sample mean is less than or equal to A 1 15. Which of the following best describes the given sampling distribution? B. = D. A The sampling distribution is skewed to the left. 15. What is the probability that the sample mean is greater than 6 but esser than 12? B. The sampling distribution is normal. C. The sampling distribution is skewed to the right. D. The distribution is constant. 2 3 D