Quadratic regression Calculator

Analyzes the data table by quadratic regression and draws the chart.

Quadratic regression: y=A+Bx+Cx2

    1. (input by clicking each cell in the table below)
data 

Guidelines for interpreting correlation coefficient r :
  0.7<|r|≦1        strong correlation
  0.4<|r|<0.7     moderate correlation
  0.2<|r|<0.4     weak correlation
  0≦|r|<0.2         no correlation



    Quadratic regression
    [1-10] /63Disp-Num
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    [1]  2019/04/21 05:35   Male / 60 years old level or over / An engineer / Very /
    Purpose of use
    Personal curiousity
    Comment/Request
    Give the formula to calculate R^2 in terms of Sxx, etc.
    [2]  2019/04/12 01:05   Female / Under 20 years old / High-school/ University/ Grad student / Very /
    Purpose of use
    Math homework
    Comment/Request
    Great quadratic regression formula.
    [3]  2019/04/10 10:08   Female / Under 20 years old / High-school/ University/ Grad student / Useful /
    Purpose of use
    Math homework
    [4]  2019/04/09 08:28   Male / Under 20 years old / High-school/ University/ Grad student / Useful /
    Purpose of use
    math homework
    Comment/Request
    it would be very useful if the equation was ax^2+bx+c instead of a+bx+cx^2.
    [5]  2019/03/21 10:49   Female / Under 20 years old / Elementary school/ Junior high-school student / Useful /
    Purpose of use
    Algebra 1 homework
    Comment/Request
    Add ability to make predictions from model.
    [6]  2019/03/19 08:11   Female / Under 20 years old / High-school/ University/ Grad student / A little /
    Purpose of use
    Algebra 1 homework
    [7]  2019/03/15 23:54   Male / Under 20 years old / High-school/ University/ Grad student / Useful /
    Purpose of use
    Pre-Calculus homework
    Comment/Request
    A+Bx+Cx² is not standard in anything I've seen, ax²+bx+c seems to be much more common
    [8]  2019/03/08 10:18   Male / Under 20 years old / Elementary school/ Junior high-school student / Useful /
    Purpose of use
    Homework
    Comment/Request
    Make the results copy-pastable.
    [9]  2019/02/13 10:12   Female / Under 20 years old / High-school/ University/ Grad student / A little /
    Purpose of use
    Algebra 2 homework
    Comment/Request
    Have the data table of the graph available. Also, the formula is not one proper order according to powers.
    [10]  2018/11/30 02:33   Male / 60 years old level or over / A teacher / A researcher / Very /
    Purpose of use
    Best quadratic fit from noisy Doppler data.
    Comment/Request
    Superb.

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