The Least-squares Trend Inference calculator computes the value of the dependent variable (Y) based on the intercept (a), the slope (b) and a value of X. This is the result of a least-squares trend linear equation, through a set of X and Y values. This is also known as simple linear regression.
INSTRUCTIONS: Enter the following:
(a) Y axis Intercept
(b) Slope of Line
(x) Independent Variable
Domain (Y): The calculator returns the value of Y.
Observational Stats: This function accepts a table of numbers separated by commas and calculates observational statistics for any of the columns. This includes count, min, max, sum, sum of squares (Σx²), square of the sum (Σx)², mean, median, mode, range, mid point, rand, sort up, sort down, rand, population variance, population standard deviation, the sample/experimental variance, sample/experimental standard deviation.
Frequency Distribution: This function lets you enter a string of numbers separated by commas, a low and high range and a number of bins. It then computes how many of the observations are in each of the bins between the high and low values designated.