Applied Math 11Statistical Reasoning

Cam BennetDauphin Regional Comprehensive Secondary Schoolcabennet@mvsd.ca - www.slideshare.net

TED.com

Chapter 5 – Foundations of Mathematics 11 – Nelson

New vs OldSpecific Outcomes It is expected that students will: • 11A.S.1. Demonstrate an

understanding of normal distribution, including: – standard deviation – z-scores. – [CN, PS, T, V]

• 11A.S.2. Interpret statistical data, using: – confidence intervals – confidence levels – margin of error. – [C, CN, R, T]

Specific Outcomes• Find the population

standard deviation of a data set using technology

• Use z-scores and z-score tables to solve problems

• Use the normal distribution and the normal approximation to the normal distribution to solve problems involving confidence intervals for large samples

Pretty much the same?

What’s different?

•No binomial or approximations to the binomial distributions•Margin of error is highlighted more

What can we do to make this work for Gr 11 students?

More hands on?Use technology – text likes to promote by hand method first

Ti-83 or WinstatsTake your time – no provincial examLink to current events – 2011 Election

Intro to Standard Deviation Activity

Other ideas

•Hand Spans – measure the hand span of everybody in the room.•Measure hand span of family members (incl. children)•Which one will have larger / smaller standard deviation?

Aims - http://www.tc.umn.edu/~aims/aimstopicsVariability.htm

Have students predict what items to be measured would have a smaller deviation?e.g. fruit - circumference of oranges, grapefruits

Manitoba Math Teachers – NING or Wiki – is anyone interested?

Other opinions re: textbook – concerns etc.