10.4 - Histograms & Stem-Leaf Plots

The table shows the number of photocopies made during one day at each of the 25 schools in a school district.

Which histogram displays all the data in the table correctly?

• 
• 
• 
• 

The distance in miles that some students live from school is shown in the histogram.

Which statement about the data in the histogram is true?

• The distribution of data is asymmetrical, so the mean and the median are likely outside the "2.1-3 mile" category.

• The distribution of data is asymmetrical, so the mean and the median are likely within the "2.1-3 mile" category.

• The distribution of data is symmetrical, so the mean and the median are likely outside the "2.1-3 mile" category.

• The distribution of data is symmetrical, so the mean and the median are likely within the "2.1-3 mile" category.

There are 160 employees who work for a company. The histogram summarizes the amount of time each employee has been in his or her current position at the company.

Based on the histogram, which statement must be true?

• There are 5 employees who have been at their current position for 30-35 months.

• There are 6-11 employees who have been at their current position for 15 months.

• Half of the employees have been at their current position 18 or more months.

• Half of the employees have been at their current position 11 or fewer months.

A choir director made a histogram showing the ages of the members of the choir.

Which statement about the data in the histogram must be true?

• More than half the members are from 46 - 73 years old.

• There are more men than women in the choir.

• The choir has a total of 100 members.

• Exactly 20 members are less than 32 years old.

The histogram shows the total number of swimmers in different age groups who participated in a swimming competition.

Based on the histogram, which statement is true?

• There were 15 swimmers who were younger than 30 years old.

• A total of 10 swimmers were 50 years old or older.

• The number of swimmers who were 40 years old or older is less than the number of swimmer who were 29 years old or younger.

• A total of 70 swimmers participated in the competition.

In a computer class, students take a typing test to determine their speed.

How many students type between 15 - 29 words per minute?

Mathematical Equivalence

ON

In a computer class, students take a typing test to determine their speed.

Based on the information in the histogram, what percent of students type less than 30 words per minute?

• 32%

• 35%

• 30%

• 45%

In a computer class, students take a typing test to determine their speed.

Forty percent of the students were able to type at which speed interval?

• 0 - 14

• 15 - 29

• 30 - 44

• 45 - 59

In a computer class, students take a typing test to determine their speed.

Which speed interval is represents the mode of the data?

• 0 - 14

• 15 - 29

• 30 - 44

• 45 - 59

In a computer class, students take a typing test to determine their speed.

Which statement does NOT represent the data set?

• A total of 50 students can type from 0 - 59 words per minute.

• The number of students who typed 45 - 59 wpm is equal to the number of students who typed 0-29.

• The number of students who typed 30-44 wpm accounted for 28% of the students.

• Less than 15% of the students type 0-14 words per minute.