Biased Samples & Misleading Data

Presentation

•

Mathematics

•

7th Grade

•

Practice Problem

•

Medium

•

CCSS

7.SP.A.1, 6.SP.B.5C, 8.EE.B.5

Standards-aligned

Kimberly Bayer

Used 88+ times

FREE Resource

4 Slides • 18 Questions

Biased Samples & Misleading Data

Lessons 10-2 & 10-3

Multiple Choice

A sample is...

The group of people you survey to collect data

The entire group of people you want to learn about

Free food

Multiple Choice

A biased sample...

Is valid

Favors one or more parts of the population over others

Accurately represents the entire population

Maci surveyed all of the members of her Softball team about their favorite sport.

Based on these results, Maci concludes that softball is the favorite sport among ALL of her classmates.

Open Ended

Why is Maci's survey biased?

Type response here

Multiple Choice

Is the survey biased or unbiased?

To represent all students attending a school, the principal surveys the students in one math class.

Biased

Unbiased

Multiple Choice

Is the survey biased or unbiased?

Each student's name is written on a piece of paper. The names are placed in a bowl, and names are picked without looking.

Biased

Unbiased

Multiple Choice

Is the survey biased or unbiased?

Every 20th person is chosen from an alphabetical list of all students attending a school.

Biased

Unbiased

Multiple Choice

Is the survey biased or unbiased?

Customers at a music store are surveyed about what they like to do in their free time.

Biased

Unbiased

Misleading Graphs & Statistics

Even if the data is unbiased, graphs and statistics can still be used to influence your opinions.

Poll

Which graph appears to show a steeper increase in price?

Graph A

Graph B

Multiple Choice

Which graph should be used if...

You want to show that ticket sales have risen, but it's not that big of a deal.

Graph A

Graph B

Multiple Choice

Which graph should be used if...

You want to tell people that ticket sales keep going up, and it's ridiculous!

Graph A

Graph B

Multiple Choice

Which graph should be used if...

You want people to think that your business is extremely profitable.

Graph A

Graph B

That may be true, but that's only because Tornado is SO much taller than all the others!

The Median would be a more accurate "average" for this data.

"The average height of our roller coasters is 170 ft!"

Multiple Choice

To find the _________ you add up all the numbers and then divide by how many numbers you have.

Mean

Median

Mode

Range

Multiple Choice

Find the Mean of:
8, 14, 32, 6, 15

175

Multiple Choice

To find the ________ you put all numbers in order from least to greatest and find the number that is in the middle.

Mean

Median

Mode

Range

Multiple Choice

Find the median of these numbers:
4,2,7,4,3

Multiple Choice

A data set can have more than one mode

True

False

Multiple Choice

What is the mode of the data below?

12 , 14 , 5 , 12 , 5 , 12 , 11

5 and 12

11.8

Multiple Choice

The mode score on the 7th grade math test was 94! Which of these interpretations must be correct?

99 was the highest score on the test.

More students received a 94 than any other score

No student scored below a 50

A score of 91 was slightly below average.

Biased Samples & Misleading Data

Lessons 10-2 & 10-3

Show answer

Auto Play

Slide 1 / 22

SLIDE

Similar Resources on Wayground

18 questions

Multiplying and Dividing Integers

Presentation

•

7th Grade

16 questions

Math Discovery - D - Probability

Presentation

•

7th Grade

19 questions

Scale Factors and Scale Drawings

Presentation

•

7th Grade

17 questions

Volume of Rectangular and Triangular Prisms

Presentation

•

7th Grade

17 questions

Adding & Subtracting Signed Fractions

Presentation

•

7th Grade

17 questions

Percent Expressions

Presentation

•

7th Grade

17 questions

Scatterplots and Trend Lines

Presentation

•

7th Grade

16 questions

Sample Spaces, Tree Diagrams & The Counting Principle

Presentation

•

7th Grade

Popular Resources on Wayground

24 questions

PBIS-HGMS Day 10

Quiz

•

6th - 8th Grade

10 questions

HCS SCI 03 Summer School Review 3

Quiz

•

3rd Grade

11 questions

Home Scope

Quiz

•

7th - 8th Grade

15 questions

HCS SCI 05 Summer School Assessment 3 Review

Quiz

•

5th Grade

35 questions

Lufkin Road Middle School Student Handbook & Policies Assessment

Quiz

•

7th Grade

18 questions

Geo 11.3 Area of Circles and Sectors

Quiz

•

9th - 11th Grade

Discover more resources for Mathematics

24 questions

PBIS-HGMS Day 10

Quiz

•

6th - 8th Grade

11 questions

Home Scope

Quiz

•

7th - 8th Grade

35 questions

Lufkin Road Middle School Student Handbook & Policies Assessment

Quiz

•

7th Grade