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Bell Work 1/21/15

Bell Work 1/21/15 . Simplify the following fractions. Yesterday’s Homework. Any questions? Please pass your homework to the front. Make sure the correct heading is on your paper. Is your NAME on your paper? Make sure the homework is 100% complete.

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Bell Work 1/21/15

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  1. Bell Work 1/21/15 Simplify the following fractions.

  2. Yesterday’s Homework • Any questions? • Please pass your homework to the front. • Make sure the correct heading is on your paper. • Is your NAME on your paper? • Make sure the homework is 100% complete. • Incomplete work will NOT be accepted.

  3. Heading 1/7/2020 Scatter Plots and Trend Lines TSWBAT: interpret and analyze scatter plots. Represent two numerical variables on a scatter plot and informally describe how the data points are distributed and any apparent relationship that exists between the two variables (e.g., between time spent on homework and grade level).

  4. Notes • Definitions • Scatter Plot = a graph of points representing a collection of data. • Correlation = describes a relationship between two data sets. • Extrapolation = a prediction outside the range of our data. • Interpolation = a prediction within the range of our data.

  5. Notes a. Positive Correlation upward The graph has a pattern of __________ slope. increases increases As variable x ____________, variable y ___________.

  6. Notes b. Negative Correlation downward The graph has a pattern of ____________ slope. decreases increases As variable x ____________, variable y ___________.

  7. Notes c. No Correlation correlation no The graph has a pattern of _____ _____________. can not be predicted increases As variable x ____________, variable y _____________________.

  8. Notes Ex1. Look at the points (dots) on the graph, is there a correlation (pattern/trend)? upward The graph has a pattern of __________ slope. increases increases As variable x ____________, variable y ___________. increases As hours spent online ____________, number of emails sent __________. increases Positive Correlation

  9. Notes Ex2. Look at the points (dots) on the graph, is there a correlation (pattern/trend)? downward The graph has a pattern of ____________ slope. decreases increases As variable x ____________, variable y ___________. increases As the temperature outside ____________, the hours spent studying ___________. decreases Negative Correlation

  10. Notes Ex3. Look at the points (dots) on the graph, is there a correlation (pattern/trend)? correlation no The graph has a pattern of ____ ____________. can not be predicted increases As variable x ____________, variable y ____________________. increases As the age of someone ____________, the number of books read last year ____________________. can not be predicted. No Correlation

  11. Summary • If a scatter plot has an upward slope it has a _______ correlation. If it is downward it has a negative __________. If it is not upward or downward it has ___ correlation. • positive • correlation • no

  12. Today’s Homework • Rules for Homework • Pencil ONLY. • Must show all of your work. • NO WORK = NO CREDIT • Must attempt EVERY problem. • Always check your answers.

  13. Homework 4.4 Describe the correlation. 1. 2. 3. 4. 5.

  14. Ticket Out the Door • Complete the Ticket Out the Door without talking!!!!! • Talking = time after the bell! • Put your NAME on the paper. • When finished, turn your paper face DOWN. • Describe the correlation.

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