Statistics

1. For a class assignment, Tyler will conduct a survey to find out what students like to do after school. He asks the first 10 people he sees in the gymnasium before school what they like to do after school. Which statement correctly explains whether Tyler's sample is a random sample?

• Tyler’s sample is not random because he only asks 10 people

• Tyler’s sample is not random because he asks people in a gymnasium.

• Tyler’s sample is random because he asks the first 10 people he sees.

• Tyler’s sample is random because he asks each person the same question

Tags

CCSS.HSS.IC.B.3

Andre wants to survey a random sample of the student body in his school to find out which day after school would work best for students to do volunteer work for a local charity. Which

sample would best represent the student body?

• asking twenty students waiting in line for lunch

• asking twenty students on their way to the bus after school

• asking one person from the seventh grade daily for twenty days

• asking one person each from twenty different classrooms during the first class period

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

To evaluate the defect rate of its memory chips, an integrated circuit manufacturer tests every 100th chip off the production line.

• Biased Sample

• Unbiased Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

A real estate agent surveys people about their housing preferences at an open house for a luxury townhouse.

• Biased Sample

• Unbiased Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Airline boarding passes are marked with red stars at random to decide which passengers should have their carry-on luggage inspected.

• Biased Sample

• Unbiased Sample

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Explain why this graph may be misleading?

• the x-axis does not have equal intervals
• San Fransisco is not a real city
• you cannot have percents in a line graph
• the y-axis does not have equal intervals

The graph shows the results of a survey to determine student's favorite pets. Why is this graph misleading?

• The slices are the wrong color
• The slices are not the correct size
• The percents do not add up to 100
• Not misleading

Why is this graph misleading?

• x axis intervals are different

• y axis intervals are different

• y axis doesn't start at 0

• you can't use different colors

What is the error in this graph?

• Title for the bar graph

• width of a bar

• key is not appropriate

• scale is not even

What is wrong with this graph?

• Not enough information.

• The basketball ticket prices in 2001 were approximately 2 times as much as 1991, yet the size of the basketballs are about 4 times as big.

• y axis scale is not uniform