Understanding the Best Fit Line: What Does It Mean?

  • Thread starter Thread starter papi
  • Start date Start date
  • Tags Tags
    Fit Line Mean
Click For Summary

Homework Help Overview

The discussion revolves around the concept of a best fit line in the context of graphing data points. Participants are exploring what it means to draw a best fit line and the implications of including or excluding certain data points.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants are questioning whether a best fit line connects all points, only some, or if it should leave points above and below the line. There are also inquiries about the method of drawing the line, particularly in relation to hand-drawn graphs versus using software like Excel.

Discussion Status

The discussion is ongoing, with various interpretations of how to approach drawing a best fit line being explored. Some participants have offered insights on using software tools, while others are focused on the manual drawing aspect. There is no explicit consensus yet on the best approach.

Contextual Notes

Participants are considering different types of graphs, such as linear graphs, and the impact this has on the placement of the best fit line. There is also mention of potentially excluding outlier points from the analysis.

papi
Messages
31
Reaction score
0
best fit line?

DOes that mean you draw a line/curve connecting the dots?
Or does that mean you draw a line in between the dots leaving some above and some below?
or does that mean you connect the dots but leave out the ones that dnt fit with the shape?
please help
 
Physics news on Phys.org


If you are using Excel, you would have to add a "trend line", or you can always draw it but I'm too lazy for that :P. Anyways it means to draw/put a line on a graph indicating a statistical trend. Some dots can also not be included because of it being a wrong or bad value. In Excel, just right click on 1 of the dots on the graph and click add trendline, the choose which type fits best your graph. If you need the equation, just click the option tab and select add equation on chart.
 


my graoh was drawn by hand
so is it a line between the pointss, or through??
 


Well I would say it depends on your graph. Let's say you have a linear graph, then you will need to make a straight line that connects most dots.
 

Similar threads

Area Under Frequency versus Time Curve meaning?
  • · Replies 8 ·
Replies
8
Views
2K
Does the block move along the pink dotted lines
  • · Replies 57 ·
2
Replies
57
Views
9K
Why are the electrostatic field lines normal to a charged conductor?
  • · Replies 10 ·
Replies
10
Views
2K
Finding Absolute Zero Values from Best Fit Lines with & w/o Uncertainty
  • · Replies 2 ·
Replies
2
Views
2K
Can somebody explain what is happening here? (sunlight refracting in Earth's atmosphere)
  • · Replies 12 ·
Replies
12
Views
1K
Undergrad Regression line with zero slope and average as best prediction
  • · Replies 2 ·
Replies
2
Views
2K
Drawing Radial Field Equipotentials and Field Lines
  • · Replies 3 ·
Replies
3
Views
2K
Uncertainty Analysis Homework: Vel Calc from Line of Best Fit
  • · Replies 11 ·
Replies
11
Views
3K
Constant velocity, constant acceleration?
  • · Replies 11 ·
Replies
11
Views
3K
Solve Spring Constant Homework Confusion
  • · Replies 3 ·
Replies
3
Views
1K