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statistics and probability examination
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Tel. No. 346 โ 5975 Email address: [email protected] SUMMATIVE TEST GRADE 11 โ STATISTICS & PROBABILITY Second Semester- MIDTERM Name : ________________________________________ Date: ________________ Grade & Section: _________________________________ Strand: ______________ Specialization: ___________________________________ Score: _______________ General Instructions: This is a 100 โ item test, read each direction written in every type of test. Strictly NO ERASURES. (ALTERATIONS/ERASURES) are strictly prohibited. Answer this test in one hour. I. IDENTIFICATION A. The following are some items in a survey questionnaire. Classify each of the items according to nature. (qualitative or quantitative). Write your answer on the blank before each number. ___________1. Control number ____________6. Average gross monthly income ___________2. Marital status ____________7. Years of service in the company ___________3. Number of children ____________8. No. of hours spent chatting online ___________4. Educational attainment ____________9. No. of glasses of water taken daily ____________5. Occupation ____________10. Gender B. Classify each variable as discrete or continuous. Write your answer on the blank before each number. _____________1. Getting the temperature of patient admitted in a hospital. _____________2. Collecting data about the weights of students in a certain school. _____________3. The number of patient admitted in the hospital due to COVID โ 19. _____________4. The number of no work no pay in a certain municipality caused by pandemic. ______________5. The number of families that are members of 4Pโs in Quezon. ______________6. The number of Balikbayan OFW arrive in the Philippines. ______________7. The number of text messages received by a particular individual in a day. ______________8. The number of possible outcomes in rolling a die. ______________9. The amount of liquid in a 12 โ ounce can of soda. _____________10. The number of fouls committed by a basketball team during the game. ______________11. The lifetime of a calculator battery is 10 years. ______________12. A hamburger stands sold 50 to 100 cheeseburgers near the campus each day. ______________13. A Philippine tarsier weighs between 2.8 and 5.8 ounces. ______________14. It takes Ms. Perez 1 hour to drive from her home to work.
_____________15. It took 30 minutes for Mikka to answer a mathematics word problem. _____________16. Getting distance travelled by a car. _____________17. Collecting data about the weights of students in a certain school. _____________18. The temperature in Maya at noon times. _____________19. Picking a multiple of 3 less than 200. _____________20. Tallying the number of PUI due to COVID โ 19 pandemic. II. MULTIPLE CHOICE Direction: From the given choices below, write the capital letter of the correct answer on the blank before each number that best describes the given statements. ____1. What do you call the set of all data that researchers want to investigate? A. data B. random C. population D. sample ____2. Which of the following can be considered as the best sample? A. conveniently chosen C. selected at random B. purposefully selected D. self โ selected ____3. From the given populations, which of the following sample is most likely to be representatives of the population from which it is drawn? A. population: SAP beneficiaries sample: car owners B. population: lawmakers sample: students C. population: online shoppers sample: cellphone users D. population: graduating students sample: grade 8 students For numbers 4 - 9. Suppose you tossed two coins. ____4. What are the sample spaces for the experiment above? A. HH, TT B. HH, HT, TT C. HH, TH, TT D. HH, HT, TT, TH ____5. How many possible outcomes will occur from the experiment above? A. 2 B. 3 C. 4 D. 5 ____6. What are the possible values of the random variable for the number of heads? A. 0, 1 B. 0, 1, 2 C. 1, 2, 3 D. 0, 1, 2, 3 ____7. What are the possible values of the random variable for the number of tails? A. 0, 1 B. 0, 1, 2 C. 1, 2, 3 D. 0, 1, 2, 3 ____8. Which of the following is NOT a possible value of the random variable for the number of heads? A. 1 B. 2 C. 3 D. 4 ____9. Which of the following is NOT a possible value of the random variable for the number of tails? A. 4 B. 3 C. 2 D. 1 Refer to the given problem in answering numbers 10-11. The given table shows the probability distribution of a random variable Z which represents the percentage of male students per section among Grade 11 senior high school students. Z 8 9 11 14 15 18 P(Z) 8% 8% 25% 17% 25% 17%
_____20. All players will be grouped according to their age and will randomly choose players from each group to measure their height. Which random sampling technique did he apply? A. cluster B. stratified C. simple D. systematic III. PROBLEM SOLVING A. For the following distribution, find the following: a. Population mean b. Variance c. Standard deviation X 0 1 2 3 P(x) 1/8 3/8 3/8 1/
B. In a normal curve, identify the region being describe by each of the following. Shade the region and find the area using the standard normal distribution table.