Quiz 1.1 - 1.7 Review`Let's get ready for our first quiz!

Have your notebook, pencil, and calculator ready. You may refer back to your notes, Home Link, and Journal if you need to. For each page, follow the directions of what to copy in your notebook and then answer the question. When you're ready, go to the next page to check your answers. Good luck! Be sure to ask questions today if you aren't sure of something, because tomorrow will be too late! Use your time wisely.

Statistical QuestionsAnswer in your notebook:

What is a statistical question?

A statistical question is a question that has many different answers (variability).

Tap to reveal the answer

Statistical QuestionsCopy each question and decide if it's statistical or not.

How tall was Abraham Lincoln?

How many pets do you have (asking everyone on your bus)?

What is your favorite sport (asking everyone in your gym class)?

How many ounces are in a pound?

Answers on the next slide

How many pets do you have (asking everyone on your bus)? Statistical

What is your favorite sport (asking everyone in your gym class)? Statistical

How many ounces are in a pound? not statistical

How tall was Abraham Lincoln? not statistical

Create a dot plot in your notebook of the following data:

Number of Text Messages Sent Yesterday

10, 5, 9, 0, 3, 4, 3, 9, 1, 0, 3

Don’t forget your title!

Number of Text Messages Sent Yesterday

If you had any mistakes, fix them, because you'll need this dot plot to answer the questions on the next page.

• What is the mode? • What is the median?• Is there an outlier?

Jonathan figured out the mean is 18. Is that a reasonable answer?

Number of Text Messages Sent Yesterday

What is the mode? 3

What is the median? 3

Is there an outlier? no

Jonathan figured out the mean is 18. Is that a reasonable answer? No, the mean can't be 18 because it's greater than the

maximum.

Number of Text Messages Sent Yesterday

Number of Cousins

Which point is the outlier in this set of data?

Find the mean of all of the data in the dot plot. Round the nearest ones place.

What will happen to the mean if we don't include the outlier? Why?

Number of Cousins

Which point is the outlier in this set of data? 9

Find the mean of all of the data in the dot plot. Round the nearest ones place. 3

What will happen to the mean if we don't include the outlier? Why? If we don't include the outlier of 9, the mean will get smaller because we're leaving

out a large number.

In 1924, Norway received more medals in the Olympics than any other country! They earned twice as many as the Soviet Union and about three times as many as Austria!!

How does the graph make the reader believe the claim is true?

In 1924, Norway received more medals in the Olympics than any other country! They earned twice as many as the Soviet Union and about three times as many as Austria!!

How does the graph make the reader believe the claim is true?Vertical axis doesn’t start at zero and uses a small interval, making Norway’s bar appear to go to the top of the graph.

HistogramsWhich bin, or interval, contains the greatest amount of data points?

How many black cherry trees are at least 80 feet tall?

In which interval would an 80 foot tree be added?

How many trees are in the 60-65 foot range?

Can you tell the specific heights of the trees in the 85-90 foot interval? Explain.

HistogramsWhich bin, or interval, contains the greatest amount of data points? 75-80 feet

How many black cherry trees are at least 80 feet tall? 7 trees

In which interval would an 80 foot tree be added? 80-85

How many trees are in the 60-65 foot range?3 trees

Can you tell the specific heights of the trees in the 85-90 foot interval? Explain. No. A histogram shows a range of data and an overall picture, but not specific information.