Your SlideShare is downloading. ×
Moduel 5 topic 3
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Saving this for later?

Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime - even offline.

Text the download link to your phone

Standard text messaging rates apply

Moduel 5 topic 3

229
views

Published on

Published in: Technology

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
229
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Module 5 Topic 3
    Linear Regression
  • 2. Example 1
    Positive Correlation = looks like a line going up to the sky from the left of the screen to the right of the screen
    Negative Correlation = looks like a line going down to the ground from the left of the screen to the right of the screen
    None = The points do not form a line at all, they are scattered all over the place!
  • 3. Example 2
    Similar Problem: Use your calculator to find the equation for the line of best fit for the data. Round your answer to two decimal places.
    Residential Vehicle Miles Traveled per Household by Annual Household Income
    HouseholdIncome (thousands)
    10 15 20 25 35 50 60 75
    Miles (thousands)
    14.2 15.8 19.3 22.3 25.2 28 28.9 29.6
  • 4. Example 2 Continued
    Using your graphing calculator follow the instructions below;
    Before each problem do this:
    Press On
    Press 2nd
    Press +
    Press 4: ClrAllLists
    Press Enter
  • 5. Example 2 continued
    Once you have done this your calculator clears all the list information for you!
    Press STAT
    Press 1:Edit
    In L1 put in the Household Income
    In L2 put in the Miles
    Press 2nd
    Press Mode (quit)
    Press STAT
    Arrow over to CALC
    Press 4:LinReg ax + b
    We get LinReg
    y= ax + b (a is the slope and b is the y-intercept)
    y= .24x + 14.17
  • 6. Example 3
    Use the equation for the line of best fit to predict the number of mile traveled per household for an annual household income of 30 thousand dollars. Round your answer to the nearest tenth. Use the equation in Example 2.
    Use the equation we found in questions #3 and plug in 30 for x.
    y = .24(30) + 14.17
    y = 21.37