Data Displays

The bottom shows the number of pets. Zero. Two students have zero pets. One. Three students have one pet. Two. Four students have two pets. Three. Two students have three pets. Four.

One student has four pets. Which is most common? Two pets. Four students. What is the range? From zero to four. How many have more than three? One student.

Daily sleep time of 30 students. The bottom shows hours. A histogram groups the sleep times. Which group has the most students? Eight to nine hours. Eleven students.

How many sleep less than seven hours? Four students. How many sleep at least nine hours? Eight students. Daily exercise time of 30 students. The bottom shows minutes. Ten.

Two students exercise ten minutes. Twenty. Three students exercise twenty minutes. Thirty. Three students exercise thirty minutes. Forty. Five students exercise forty minutes. Fifty.

Four students exercise fifty minutes. Sixty. Three students exercise sixty minutes. Seventy. One student exercises seventy minutes. Eighty. One student exercises eighty minutes. Ninety.

One student exercises ninety minutes. How many data points are there? Thirty students. What is the exercise time range? From ten to ninety minutes. What is the most common exercise time?

Forty minutes. Five students. How many exercise more than sixty minutes? Three students. Heights of 40 students. The bottom shows height in centimeters. A histogram groups the heights.

Which height range has the most students? One forty to one forty-nine. Eleven students. How many are one forty to one forty-nine? Eleven students. How many are at least one sixty? Nine students.

How many are under one fifty? Twenty-two students. Weekly allowance of 15 students. The bottom shows yuan. Fifteen. Two students get fifteen yuan. Twenty. Three students get twenty yuan. Twenty-five.

Two students get twenty-five yuan. Thirty. Two students get thirty yuan. Forty. One student gets forty yuan. Fifty. One student gets fifty yuan. One hundred. One student gets one hundred yuan.

What is the most common allowance? Twenty yuan. Three students. What is the highest allowance? One hundred yuan. Are there any unusually high values? Yes. One hundred.

How many have less than thirty yuan? Seven students. Math test scores of 50 students. The bottom shows points. A histogram groups the test scores. Which score range has the most students?

Eighty to eighty-nine. Thirteen students. How many passed, above sixty? Thirty-five students. How many scored above eighty? Fifteen students. Which score range has the fewest?

Ninety to ninety-nine. Two students. Weekly TV time of 25 students. The bottom shows hours. One. One student watches one hour of TV. Two. One student watches two hours of TV. Three.

Two students watch three hours of TV. Four. Three students watch four hours of TV. Five. Four students watch five hours of TV. Six. Two students watch six hours of TV. Seven.

Two students watch seven hours of TV. Eight. Two students watch eight hours of TV. Nine. One student watches nine hours of TV. Ten. Two students watch ten hours of TV. Twelve.

One student watches twelve hours of TV. What is the range of watching time? From one to twelve hours. What is the most common watching time? Five hours. Four students.

What is the longest watching time? Twelve hours. How many watch more than five hours? Ten students. What are the characteristics of this distribution?

Most students watch about five hours. A few watch much longer.