_____ 1. A group of students obtained the following scores in their statistics quiz: 7, 4, 8, 9, 3,
6, 7, 4, 5, 8. The middle quartile is 6.5, What is the median?
A. 5 B. 5.5 C. 6.5 D. 7
_____2. Measure of position that divides the date into four equal parts.
A. Decile C. Percentile
B. Median D. Quartile
_____3. The 1st quartile of the ages of 250 Grade 10 students is 16 years. Which of the following
statement is true?
A. Most of the students are below 16 years old
B. Seventy – five percent of the student are 16 years old and above.
C. Twenty – five percent of the students are 16 years old.
D. One hundred fifty students are younger than 16 years.
For items 4 and 5.
The owner of a supermarket recorded the number of customers who came into his store each
day during the first eleven days of the month. The results were 120, 80, 100, 70, 150, 30, 60, 70,
120, 80, and 90.
_____4. Find the lower quartile.
A. 50 customers B. 60 customers C. 70 customers D. 80 customers
_____5. Find the upper quartile.
A. 100 customers B. 120 customers C. 135 customers D. 150 customers