Statistics
Answer the following: Thank you tutor!
SECOND SEMESTER SY 2020-2021 DIRECTION: Read and answer the following questions. Write the letter of your choice on the spaces provided before each number. 1. It is also called a Student's t-distribution. A. percentile distribution B. 2-distribution C. t-distribution D. probability distribution _2. This refers to the measure of position whose data is divided into 100 parts. A. quartiles B. deciles C percentiles D. median 3. This refers to the maximum number of logically independent values, which vary in the data sample. A probability B. level of significance C percentiles D. degree of freedom 4. What is the right tailed area if the confidence Interval is 75%? A. 0.25 B. 0.005 C. 0.05 D. 0.10 5. Like a normal distribution, it also has a smooth shape and symmetric. A. percentile distribution B. z-distribution C. t-distribution D. probability distribution 6, What is the degree of freedom if the given sample size is 257 A 22 B. 23 C. 24 D. 25 (Understanding) 7. How many samples are there when the degree of freedom is 197 A. 17 B, 18 C. 19 D. 20 8. Find the t-value of 75 percentile with n=20. A. 0.686 B. 0,686 C 0.256 D. 1318 9. The following are characteristics of t-distribution EXCEPT; A. Like the normal distribution, the t-distribution has a smooth shape B. Like the normal distribution, the t-distribution is symmetric. C. Like a standard normal distribution, the t-distribution has a mean of 1 D. The normal distribution assumes that the population standard deviation is known. The t-distribution does not make this assumption. 10. Find the degree of freedom whose t-value is 0.689 with 75" percentile. A.3 B. 15 C. 17 D. 18 (Ananyaing) Using the given data below, find the following percentiles. (numbers 11-15) 80, 90, 65, 60, 50, 45, 50, 56, 40 _11 Find the 25"percentile. D. 50 A. 40 B. 45 C. 90 _12. Find the 95" percentile B. 56 C. 40 D.80 A. 90 13. Find the 50" percentile. A. 45 B. 60 C. $6 D. 50 14. Find the 75" percentile. A. 50 B. 56 C. 65 D. 80 15. Find the 10" percentile. A, 56 8. 50 C. 45 D. 40 16. If the scores are 20, 30, 50, 60, 70, 75 and 80, what will be the 25" percentile? A. 30 B. 20 C. 50 D. 60 17. If the scores are 20. 30, 50, 60, 70, 75 and 80, what will be the 95" percentile? A. 30 8, 20 C. 80 D. 60 18 The percentile rank of a student is 50, what percent of the class is her scare belongs? A. 10% B. 25% C. 509% D. 75% (Creating) If. Complete the table below by identifying the degree of freedom, right-tailed area and the t-value for each percentiles and the sample size. percentile n df 25th right-tailed area 15 30th 7 25th 10 95th 20
