Bell Work1/21/15 Simplify the following fractions.
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Transcript of Bell Work1/21/15 Simplify the following fractions.
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Bell Work 1/21/15
Simplify the following fractions.
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Yesterday’s Homework
1. Any questions?2. 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.
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Scatter Plots and Trend Lines
04/19/23
Heading
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).
4.4
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Notes
• Scatter Plot = a graph of points representing a collection of data.
• Correlation
= describes a relationship between two data sets.
• Definitions
• Extrapolation = a prediction outside the range of our data.
• Interpolation = a prediction within the range of our data.
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Notesa. Positive Correlation
The graph has a pattern of __________ slope.
As variable x ____________, variable y ___________.
upward
increases increases
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Notesb. Negative Correlation
The graph has a pattern of ____________ slope.
As variable x ____________, variable y ___________.
downward
increases decreases
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Notesc. No Correlation
The graph has a pattern of _____ _____________.
As variable x ____________, variable y _____________________.
no correlation
increases can not be predicted
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Notes
Look at the points (dots) on the graph, is there a
correlation (pattern/trend)?
As hours spent online ____________, number of emails sent
__________.
Ex1.
The graph has a pattern of __________ slope.
As variable x ____________, variable y ___________.
upward
increases increases
increases
increases Positive Correlation
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Notes
As the temperature outside ____________, the hours spent
studying ___________.
Ex2.
The graph has a pattern of ____________ slope.
As variable x ____________, variable y ___________.
downward
increases decreases
increases
decreases Negative Correlation
Look at the points (dots) on the graph, is there a correlation
(pattern/trend)?
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Notes
As the age of someone ____________, the number of books read
last year ____________________.
Ex3.
The graph has a pattern of ____ ____________.
As variable x ____________, variable y ____________________.
no
increases can not be predicted
increases
can not be predicted. No Correlation
Look at the points (dots) on the graph, is there a correlation
(pattern/trend)?
correlation
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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.
positivecorrelation no
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Today’s Homework
1. Pencil ONLY.2. Must show all of your work.• NO WORK = NO CREDIT
3. Must attempt EVERY problem.4. Always check your answers.
Rules for Homework
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Homework 4.4Describe the correlation.1. 2. 3.
4. 5.
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Complete the Ticket Out the Door without talking!!!!!
Talking = time after the bell!
Ticket Out the Door
Put your NAME on the paper.
When finished, turn your paper face DOWN.
Describe the correlation.