Algebra 27 Sept 2011 1) Take out your papers from your group folder and put them in your binder. 2) Put all your supplies and homework on your deskWarm-up:

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Algebra 27 Sept ) Take out your papers from your group folder and put them in your binder. 2) Put all your supplies and homework on your deskWarm-up: Send one person from group to get calculators. pg. 58: 11 pg. 58: 11 write basic info on your write basic info on your paper; be ready to paper; be ready to explain your thinking explain your thinking Mon Tues

OBJECTIVE Instructional: Students will review interpreting histograms, finding data sets if given the mean and begin proportional thinking unit. Language: Students will take notes.

Homework due today Project: 3. Draw a bar graph of the median age data 4. make stem and leaf and box plot for the population data for the main cities 5. Find MEAN of population data for the main cities Homework due next class: pg. 56: 6, pg. 76: 11 Need to take test: P3: Austin

review what are the measures of center? what information can you find from a box plot? from which data displays can you recreate the data list? which data displays picture numeric data? categorical? data displays: dot plot, box plot, bar graph, stem-and-leaf plot, histogram, scatter plot

The histogram shows the number of minutes students at Montrose Junior High typically spend on household chores each day. What do you know from the graph? What DON’T you know? How many students spend 21 to 40 minutes on chores? How many students spend 15 – 20 minutes on chores?

mean is the average Let mean and median = 15 ___ ___ = the sum mean = sum divided by 3 (# of #’s) 15 = sum/3 OR sum of the numbers = 3 x 15 sum = 45 SO, ___ ___ = 45 What numbers work?

Interpreting “mean” Fill in the blank(s)…. what numbers??? 1) 10, ___, 20 if the mean is 15 2) ___, ___, 16 if the mean is 10 3) ___, ___, ___ if the mean is 20 and the median is 15 NOW do pg. 51, #11 and pg. 67, #14;

Answer these questions on the bottom of your classwork paper What did you just learn? What was interesting? What questions do you still have?