Measure of Data

In the set of scores: 14, 17, 10, 22, 19, 24, 8, 12, and 19, the median score is _____.

• 17

• 16

• 15

• 13

In a 70-item test, Melody got a score of 50 which is the third quartile. This means that:

• she got the highest score.

• her score is higher than 25% of her classmates.

• she surpassed 75% of her classmates.

• seventy-five percent of the class did not pass the test.

The 1st quartile of the ages of 250 fourth year students is 16 years old. Which of the following statements is true?

• Most of the students are below 16 years old.

• Seventy-five percent of the students are 16 years old and above.

• Twenty-five percent of the students are 16 years old.

• One hundred fifty students are younger than 16 years.

If a data set consists of 24 scores, which position is the median?

• 5th

• 10th

• 12th

• 12.5th

The lower quartile is equal to

• 50th percentile

• 25th percentile

• 2nd decile

• 3rd quartile

When a distribution is divided into hundred equal parts, each score point that describes the distribution is called a ___________.

• percentile

• decile

• quartile

• median

The double dot plot shows the number of city pet registrations for several days.

• The mean number of cat registrations is greater than the mean number of dog registrations.

• The dogs’ data has a mean of 10 registrations.

• The cats’ data has a mean of 15 registrations.

• The mean number of dog registrations is greater than the mean number of cat registrations.

The double box plot below shows the number of car shows attended by two car clubs each year. Compare the centers and variations of the two populations.

• The Cruisers' IQR is 5 greater than the Car Hops' IQR.

• The Car Hops' IQR is 2 greater than the Cruisers' IQR.

• The data for the Car Hops is more consistent.

• The data for the Cruisers is more consistent.

The double box plot shows the number of Calories per serving for various fruits and vegetables.

• The median for the fruit data is 125.

• The median for the vegetable data is 75.

• The fruits have a higher number of calories with a greater variation.

• The vegetables have a higher number of calories with a greater variation.

Ms. Andrey claims the average score on a quiz in her class was 25. Mr. Luna claims the average score on a quiz in his class is 25.

• Ms. Andrey used the mode, while Mr. Luna used the median.

• Ms. Andrey used the mean, while Mr. Luna used the mode.

• Both teachers used the mean.

• Both teachers used the median.