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https://www.youtube.com/watch?v=ul9MtMiIOnE Let’s hear from a world famous expert on questions.

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a sentence in an interrogative form, addressed to someone in order to get information in reply a problem for discussion or under discussion; a matter for investigation

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A statistical question is a question that can be answered by collecting data, and different answers are expected. A non-statistical question is answered by a single response, and is not answered by collecting data.

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A GOOD statistical question must have a specific topic, a population, variance or in other words several possible answers related to the data.

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How old are you? How old are the students in your school?

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What is the height of the tallest student in this class ? What are the heights of the students in your class?

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TOPICS & POPULATION Pets Shoe size ANNOYING Siblings TV time Average Bedtime

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Pair up with a partner Take out a sheet of paper Tear it in half Using a dark marker, write a statistical on one half & non-statistical question on the other half. Use tape to place each question in the right category on the board

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Specific topic + population + Variability or several possible answers related to the data = A statistical question

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1)Average shoe size 2) TV time 3) Siblings (list the total number of sisters/brothers) 4) Pets 5) Average bedtime

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1)Form topic groups 2) Write your statistical question 3) Come up with a plan for collecting the data 4) Go around the room & collect data from each student

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1) Find the MEAN Add all the numbers together and divide the SUM by the number of people you interviewed

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1) Find the RANGE Subtract the highest number from the lowest number

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1)What is the average (the mean) shoe size of a 6 grader? 2) What is the average (the mean) TV time of a 6 grader? 3) What is the average (the mean) total number of siblings of the 6 grader? 4) What is the total number of Pets an average (the mean) 6 grader has? 5) What is the average (the mean) bedtime of a 6 grader?

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Aron, Aron, & Coups, Statistics for the Behavioral and Social Sciences: A Brief Course (3e), © 2005 Prentice Hall Chapter 2 The Mean, Variance, Standard.

Aron, Aron, & Coups, Statistics for the Behavioral and Social Sciences: A Brief Course (3e), © 2005 Prentice Hall Chapter 2 The Mean, Variance, Standard.

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