Linear Regression Calculator

This linear regression calculator uses the least squares method to find the line of best fit for a set of paired data. The line of best fit is described by the equation f(x) = Ax + B, where A is the slope of the line and B is the y-axis intercept.
All you need to do is enter paired data into the text box, each pair of x and y in a separate line (row).

Also, the coefficient of correlation is calculated as the Pearson product-moment correlation coefficient (PPMCC or PCC or R). The Pearson correlation coefficient measures the strength of a linear association between two variables, where the value R = 1 means a perfect positive correlation and the value R = -1 means a perfect negative correlation.

Practice problems from statistics:

Sport shooting
During small-bore rifle shooting, the following scores were achieved in one series: 9, 9, 8, 9, 10, 6, 8, 9, 9, 10, 8, 7, 6. a. Arrange the values in ascending order. b. Construct a frequency distribution table and calculate the relative frequencies and r
Measuring data
We gradually measured the values of 3,8,13,10,1,13,10,5,3,9. Calculate how much is the sum of the median and average of this file from the mode of this file.
Median and modus
Rachel rolled a die 50 times. The table shows the frequency of each face: Face Number: 1 2 3 4 5 6 Frequency: 8 7 5 11 6 13 Calculate the mode and median of the face numbers that Rachel rolled.
When finding out
When finding out the number of minor children in 18 households, these results were obtained: 0, 2, 2, 2, 1, 1, 1, 1, 1, 0, 3, 2, 1, 1, 0, 2, 3, 2 . a. Arrange the values of the variable by size. b. Construct a frequency distribution table and calculate re
A Gallup
A Gallup poll investigated whether adults in Mumbai preferred staying at home or going out as their favorite way of spending time in the evening. Out of the 500 adults, the majority of adults (70%) indicated that staying at home was their favorite evening
75th percentile (quartille Q3)
Find 75th percentile for 30,42,42,46,46,46,50,50,54
A batsman
A batsman scored the following number of runs in seven innings 35,30,45,65,39,20,40. Find the mean, median, and range.
Increase the mean
To which number should the number 4 be changed between the numbers 4,5,7, 1,0,9,7,8, -3,5 to increase these numbers' arithmetic mean by 1.25?
Third tests
Third periodical tests are 98, 97, 86, 94, 90, 97, 91, and 94. Find the median of her grades and interpret the result.
Harmonic HM example
Find the harmonic mean of 4 and 8.
Find mean
Find the mean of two numbers: -4 and 5 (the first is negative four).