STATOOL 1.7

STATOOL is a complex application which offers you the possibility to analyze easier statistical data.

StaTool has 9 types of Hypothesis testing:
One population:
1) Mean of population (known population variance).
2) Mean of population (unknown population variance).
3) Variance of population.
4) Ratio of population.

Two populations:
5) Mean difference of two populations (known population variances).
6) Mean difference of two populations (unknown and equal population variances).
7) Mean difference of two populations (unknown and different population variances).
8) Variance ratio of two populations.
9) Ratio difference of two populations

StaTool has 9 types of Confidence Intervals:
One population:
1) Mean of population (known population variance).
2) Mean of population (unknown population variance).
3) Variance of population.
4) Ratio of population.

Two populations:
5) Mean difference of two populations (known population variances).
6) Mean difference of two populations (unknown and equal population variances).
7) Mean difference of two populations (unknown and different population variances).
8) Variance ratio of two populations.
9) Ratio difference of two populations.

StaTool has 6 types of probability distribution:
1) Normal.
2) t-Student.
3) Chi-Square.
4) F-Snedecor.
5) Binomial.
6) Poisson

Data can be ungrouped or grouped (intervals or classes).
StaTool calculates the following statistical data:
1) Mean.
2) Median.
3) Mode.
4) Standard deviation.
5) Variance.
6) Coefficient of variation.
7) Skewness.
8) Kurtosis.
9) Moments (0th to 4th, about mean and origin).
10) Quartiles, deciles and percentiles and his inverses.
11) Graphic (bar and histogram chart) and printing.

You can save and open data as a file (E1V extension).
Also, you can print data and results.

Allows us to calculate statistical data for two numeric variables X and Y.
You can calculate 5 types of functions for regression analysis using the least squared method:
1) Linear
2) Logarithmic
3) Exponential
4) Power
5) Quadratic

StaTool calculates the following statistical data:
1) Means of X and Y.
2) Standard deviations of X and Y.
3) Variances of X and Y.
4) Covariance.
5) Coefficient of correlation.
6) Formula of regression curve.
7) Estimation of X or Y.
8) Graphic (scatter plot and regression curve) and printing