Lesson 2.2.4:
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For this lesson there are 14 steps for you to take. Scroll down and do each step one-by-one. The instructions under each step will help clarify exactly what you need to do, so please read all the instructions.
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Here is the Worksheet for Lesson 2.2.4
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1.) Start Notes: Targets
Title your notes and write the targets listed below.
Title your notes and write the targets listed below.
- I can use the line of best fit to predict values for a given data set.
- I can use residuals to evaluate the accuracy of predictions based on the line of best fit.
3.) Video: Warm Up
Watch this video for a quick look to see how I set up the warm up in my notes. |
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4.) Notes: Practice 1
Let's use what we learned from the previous lessons to find the line of best fit. Follow the directions to the right for for Practice 1. Make sure to write the equation into your notes and to graph the line on your scatter plot. The goal of the equation and the line are to help you answer questions 3 and 4. |
5.) Video: Practice 1
Watch this video to see how I found the equation for the line of best fit and what it looks like on my graph. Then see how I answer part 3 and 4 of practice 1. |
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7.) Video: Practice 2
Watch this video to see how I answer question 5 from Practice 2 and fill in my graph. |
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8.) Notes: Practice 3
Now you have enough information to work through Practice 3. You will be focusing on the black bear. We already have actual data on the black bear. We will compare that data to the predicted data from the line of best fit. The goal is to identify how to find the residuals (prediction error). |
9.) Video: Practice 3
Watch this video to see how I work through finding the prediction error for a black bear. |
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11.) Notes: Practice 4
What if an animal has a gestation of 270 days. What range of years for longevity should we expect. We will obviously use our line of best fit to help us, but as the residuals show, the line of best fit will not be exact. Work through problems 8 and 9 to answer this question. For number 9, keep in mind the gestation time for an ocelot is 85 days. Then work through questions 10 and 11 to find the same information for the ocelot. |
12.) Video: Practice 4
Watch this video to see how I find a range of predicted years for the animals from practice 4. |
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