Please help me to answer these questions. Thank you so much.

QUESTIONS:

1. The following are descriptive statistics EXCEPT

A. 25% of those who took the licensure exam for teachers failed.

B. Based from a study, smoking increases the risk of lung cancer.

C. A recent survey of 2000 adults having an MBA reported that the average salary is more than $65,000 a year.

D. Last year's attendance at Ateneo's basketball game was 883, 452.

2. It refers to an attribute or characteristic of a population.

A. Statistic

B. Parameter

C. Data

D. Sample

3. Why do we use inferential statistics?

A. Inferential statistics are used to help us to generalize from the sample to the whole population.

B. Inferential statistics are used to help us to show the difference between the sample and the whole population.

C. Inferential statistics are used to help us to compare the sample to the whole population.

D. Inferential statistics is used to describe the sample.

4. Which of the following plots is most useful for detecting outlying scores?

A. Stem and leaf plot

B. Box and whisker plot

C. Scatter plot diagram

D. Histogram

5. Children in elementary school are evaluated and classified as non-readers (0), beginning readers (1), grade level readers (2), or advanced readers (3). The classification is done in order to place them in reading groups. Which level of measurement is being used in the given scenario?

A. Nominal

B. Ordinal

C. Interval

D. Ratio

6. A national random sample of 20 NSAT scores from 2018 is listed below. Calculate the sample mean and standard deviation:

29 26 13 23 23 25 17 22 17 19

12 26 30 30 18 14 12 26 17 18

A. Mean = 20.50 ; SD = 5.79

B. Mean = 20.50 ; SD = 5.94

C. Mean = 20.85 ; SD = 5.79

D. Mean = 20.85 ; SD = 5.94

7. If the mean is 8, then the mean absolute deviation of the scores 10, 9, 3, 8, 10 is

A. 1

B. 2

C. 3

D. 5

8. The teacher records the percentage that each student got correct on the last math test. Which level of measurement is being used in the given scenario?

A. Nominal

B. Ordinal

C. Interval

D. Ratio

9. In statistics, which of the following is a qualitative variable?

A. Salt water freezes at 28.4 degrees Fahrenheit.

B. The rollercoaster ride is 1 minute, 48 seconds long.

C. Your student ID is a 7-digit number.

D. My little sister is 5-1/2 years old.

10. Assume that the monthly incomes for 10 people are as follows:

$3,400 $3,100 $2,900 $3,700 $4,500

$2,800 $3,000 $4,100 $5,100 $12,000

The median for the distribution set is -

A. $3,400

B. $3,650

C. $3,550

D. $3,700

11. The names of 70 contestants are written on 70 cards. The cards are placed in a bag, and three names are picked from the bag. What sampling method was used?

A. Stratified sampling

B. Simple random sampling

C. Non-probability sampling

D. Cluster sampling

For numbers 12-13, please refer to the following problem: The following data consist of the present school enrollment of the Dr. Vesse High School. A study on the recent teaching strategies will be conducted in this school.

YEAR LEVEL First Second Third Fourth

POPULATION SIZE 150 185 220 245

12. How many samples should the researcher take if she will use 1% margin of error?

A. 8

B. 741

C. 751

D. 761

13. Using stratified random sampling, if 200 will be taken as sample, how many representatives from the first year should be drawn?

A. 30

B. 38

C. 76

D. 100

14. The scores of Psychology students in their Math quiz are presented in stem-and-leaf plot/diagram:

1 | 03

2 | 224

3 | 112333

4 | 11233356

5 | 3356

6 | 24

7 | 3

Find the midrange and sample variance.

A. Midrange = 63 ; Sample Variance = 15.65

B. Midrange = 41.5; Sample Variance = 15.34

C. Midrange = 41.5; Sample Variance = 245.01

D. Midrange = 63; Sample Variance = 235.21

15. A student's grade in a Math course is comprised of exam (40%), quizzes (20%), problem set (20%), and a final project (20%). His scores for each of the categories are 85 (exam), 100 (quizzes), 92 (problem set) and 84 (final project). Calculate his overall grade.

A. 90.25

B. 88.2

C. 89.2

D. 86.7

16. The measure of dispersion that is influenced most by extreme values is

A. the variance

B. the standard deviation

C. the range

D. the interquartile range

For numbers 17-19, please refer to the following: The test scores of 19 students are listed below

36 45 49 53 55 56 59 61 62 65

67 72 77 80 81 85 91 94 96

17. Find the 34th percentile. Interpret the result.

A. 59; 59% of the scores falls below 34

B. 61; 34% of the scores falls below 61

C. 59; 34% of the scores falls below 59

D. 61; 61% of the scores falls below 34

18. Find the 7th decile. Interpret the result.

A. 77; 7% of the scores falls below 77

B. 80; 7% of the scores falls below 80

C. 80; 70% of the scores falls below 80

D. 77; 70% of the scores falls below 77

19. Find the interquartile range.

A. 24

B. 25

C. 26

D. 27