Statistics Unit

Overview:

Our last unit focuses on statistics and probability in society.  Students will examine how sample populations are selected, surveys are carried out, statistics are collected, and results are interpreted.  Furthermore, analysis of bias that occurs throughout the process and data interpretation will done. 

Final Project:

Math 9 Statistics Project

Create and administer a survey that meets the following criteria:

a.       Ask a question(s) about the student population in your school.

b.      Select a sample population from the student body.

c.       Devise a survey that can be administered easily to students.

d.      Administer survey.

e.      Collect raw data and put into a table.

f.        Graph copy of data in a neat, easy to read graph.

g.       Analysis: draw conclusions from your survey.

h.      Discuss any forms of bias that may be prevalent in your results.

Property of Tangents

Do question 1-14 on p. 388-390. 

Rotational Symmetry

Today we examined the concept of Rotation and Rotational Symmetry (unit 7.6).  Specifically, we looked at Order of Rotation and how it relates to Angle of Rotation.

Similar Triangles

Today we did questions 1-15 on page349-351. There will be a quiz tomorrow on similar polygons and similar triangles.

Similar Polygons Continued

Today there was a homework check for yesterday's work and we continued to work on questions 8-17 on pages 341-342.

Similar Polygons

We looked at similar polygons and the importance of understanding corresponding angles and corresponding sides of similar polygons.

Homework is: questions 1-7 on page 340-341

Quiz Tomorrow

Today we did some last review on scale enlargements and reductions. Tomorrow there will be a quiz on for these concepts. (Units 7.1 and 7.2)

Factors

We looked more into scale enlargements and reductions and how we multiply a factor to determine enlargement or reduction.

Welcome Back

I hope everyone had a great spring break! Today we'll get back into the grove and do a little review of the unit we started before the break: Scale Enlargements and Reductions.

Scale Enlargements Review:
Do questions 13, 14, 15 on p. 324

Scale Reductions Review:
Do questions 18, 19, 20 on p. 331

Scale and Planets

Today we examined scale as it relates to the size of planets and the distance of planets to the sun.

Scale and Perspective

We looked at how scale exists in the real world and how our minds make sense of scale on two dimensional images. We started on textbook work p. 328-330, q. 1-16

Cool Size Constancy Image

http://www.weirdoptics.com/entries/sizeconstancy.jpg

Scale Enlargments

We started Unit 7 in the text which looks at shape symetry and transformations. Specifically we looked at proportion and scale enlargements.

Do: Q 1-10 on p. 322-324

Bracketology

After a long look at linear equations (Unit 6), the class took two days (last Thursday and Friday) to examine the concept of probability as it pertains to the greatest amateur basketball tournament in the world...NCAA Div. I March Madness. Specifically we examined what biases could exist in the ranking system of the tournament and what effect ranking actually has on a probable outcome.

Unit 6 Test Tomorrow

Do all practice questions on p. 310 and do questions 9-16 on page 316.

Review and 6.5 Quiz

Today we:

Block 2: reviewed the homework from over the weekend and did questions 14-16 on p. 313 and prepared for the 6.5 Quiz.

Block 7: did the 6.5 quiz (multiplying and dividing linear inequalities).

UNIT 6 EXAM ON WEDNESDAY!!!

Homework

Multiplying and dividing linear inequalities: do questions 9-16 on page 309.

Have a good weekend.

6.4 Quiz

Today we went over our 6.4 Quiz (Solving Linear Inequalities with adding and subtracting) in class. No homework for tonight.