quartile

Quartiles divide a distribution into how many equal parts?

• 2

• 4

• 10

• 100

In an 80-item test, Ann got a score of 60 which is the third quartile. This means that:

• Her score is higher than 25% of her classmate

• She got 75% in the test

• She surpassed 75% of her classmates

• 25% of the class failed the test

The third quartile of the ages of 230 students is 19 years old. Which of the following statements is true?

• Most of the students are above 19 years old

• 75% of the students are 19 years old.

• Twenty-five percent of the students are younger than 19 years.

• Two hundred five students are younger than 19 years

The median score is equivalent to which of the following?

• Q1

• Q2

• Q3

• Q4

Which of the following is equivalent to the lower quartile?

• Q1

• Q2

• Q3

• Q4

In a score distribution of 30 students, the 2nd quartile score is 38.5, which can be interpreted as:

• 15 students scored lower than 38.5

• 15 students scored higher than 38.5

• Both A and B

• Neither A nor B

The upper quartile of a data set is the 5th data value. How many data values are there?

• 5

• 8

• 10

• 12

If there are 8 scores that belong to the lower quartile. How many scores are there in the data set?

• 22

• 25

• 28

• 31

The lower quartile of a distribution is 38. If its interquartile range is 20, what is the upper quartile of the distribution?

• 18

• 40

• 58

• 76

In a set of scores 13, 5, 6, 10, 12, 8, 6, 3, 12 and k. What must be the value or range value of k to make the middle quartile equal to 8?

• Less than 8

• Exactly 8

• Greater than 8

• Between 8 and 12