4th Quarter Periodical Test

1. What is the 25th percentile of the following data set: 12, 15, 20, 22, 25, 30?

• 15

• 20

• 22

• 25

2. If a student scored in the 90th percentile on a test, what does this indicate?

• They scored higher than 90% of the students.

• They scored lower than 90% of the students.

• They scored exactly 90%.

• They scored the average score.

3. Which of the following is true about percentiles?

• They divide the data into equal parts.

• They are always whole numbers.

• They can be used to compare different data sets.

• They are only applicable to grouped data.

4. In a data set of 50 students' scores, what is the position of the 40th percentile?

• 20th score.

• 40th score.

• 30th score.

• 10th score.

5. To find the 75th percentile, which formula is used?

• P = (n + 1) * (75/100)

• P = n * (75/100)

• P = (n - 1) * (75/100)

• P = n + (75/100)

6. What does the 50th percentile represent in a data set?

• The highest score

• The lowest score

• The median

• The mode

7. Which of the following data sets has a 90th percentile of 85?

• 70, 75, 80, 85, 90

• 60, 70, 80, 90, 100

• 50, 60, 70, 80, 85

• 80, 85, 90, 95, 100

8. what is the value of the lower boundary in the class interval 98-103?

• 97.5

• 97

• 96.5

• 96

9. What is the class interval in the given table?

• 7

• 6

• 5

• 4

10. Find the total frequency of the given table.

• 10

• 20

• 30

• 40