Quiz 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 Questions Answer 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 Questions Copy 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.

Histograms Which 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 foot range? Can you tell the specific heights of the trees in the foot interval? Explain.

Histograms Which bin, or interval, contains the greatest amount of data points? feet How many black cherry trees are at least 80 feet tall? 7 trees In which interval would an 80 foot tree be added? How many trees are in the foot range? 3 trees Can you tell the specific heights of the trees in the foot interval? Explain. No. A histogram shows a range of data and an overall picture, but not specific information.