Texas Instruments TINSPIRE Data Collection Guidebook - Page 60

5. Click OK. For information on clearing the Statistics analysis, see Removing Analysis Options. Generating a Curve Fit Use Curve Fit to find the best curve fit to match the data. Select all of the data or a selected region of data. The curve is drawn on the graph. To generate curve fit: 1. Leave the graph unselected to examine all the data, or select a range to examine a specific area. 2. Click Analyze > Curve Fit. The Model dialog box is displayed. 3. Select the curve fit option from the drop-down list. Curve Fit option Linear Quadratic Cubic Quartic Power (ax^b) Exponential (ab^x) Logarithmic Sinusoidal Logistic (d 0) Natural Exponential Proportional Calculated in the form: y = m*x + b y = a*x^2 + b*x + c y = a*x^3 + b*x^2 + c*x + d y = a*x^4 + b*x^3 + c*x^2 + d*x + e y = a*x^b y = a*b^x y = a + b*ln(x) y = a*sin(b*x + c) + d y = c/(1 + a*e^(-bx)) + d y = a*e^(-c*x) y = a*x 56 Analyzing Data in Graph View