Descriptive Statistics

Descriptive Statistics works out the complete statistical study of a series in seconds, and explains every calculation step by step, like a teacher at your side. Made for high school and university students, teachers and anyone who works with data. It works offline, with no ads and no account. ★ THREE KINDS OF VARIABLES • Discrete quantitative variables: values (Xi) and frequencies (Ni) • Continuous quantitative variables: classes [L1 ; L2[ and frequencies • Qualitative variables: modalities and frequencies ★ QUICK DATA ENTRY • Enter your rows one by one, or import several rows at once • Paste a raw series ("3 5 5 7 3…"): the app counts the frequencies for you • Continuous variables: the app groups the values into classes of equal width, chosen automatically with Sturges' rule ★ ALL THE RESULTS • Frequency table: frequencies, proportions, cumulative frequencies and proportions • Mean, mode and modal class, median and median class • Quartiles, deciles and interquartile interval • Range, variance, standard deviation, standard error and coefficient of variation • Covariance and correlation coefficient • Classes of unequal width: the charts show densities ★ EVERY CALCULATION EXPLAINED Each result comes with its step-by-step explanation: the formula, the values put into it and the result. Ideal to check your homework, revise for an exam or understand a method. ★ CHARTS Bars, lines and box plot for quantitative variables; bars and pie chart for qualitative variables. Choose the ones you want in the settings. ★ A COMPLETE COURSE A descriptive statistics course with all its formulas, one page per notion: vocabulary (population, variable, statistical table), frequencies, measures of position (mean, median, mode, quartiles, deciles, percentiles), measures of dispersion (range, variance, standard deviation, coefficient of variation), covariance and correlation. ★ SAVE, EXPORT, SHARE • Save your studies and reopen them in their calculator • Export a study as a PDF, with the results, the charts and the explanations • Share your results as text • Export and import your backups as a file, to move them to another phone ★ FREE AND RESPECTFUL OF YOUR PRIVACY • No ads, no account, no data collected • Works without an internet connection • In English, French, German, Spanish and Portuguese • Light and dark theme, adjustable number of decimals • Free software (GNU GPL v3) Statistics homework, a dissertation, a survey to analyse or a business report: get your results in seconds, and understand them.