# How to use the Probability Calculator

##### What is the Probability Calculator?
[size=100]The [i]Probability Calculator[/i] allows you to graph and explore a variety of probability distributions. Just select your preferred distribution (e.g. Normal distribution, Binomial distribution) and customize it by adjusting the parameters.[br][br][/size][u]Note[/u]: Each distribution has specific parameters you need to adjust (e.g. Normal distribution with mean $\mu$ and standard deviation $\sigma$).
##### Features of the Probability Calculator
[table][tr][td][icon]https://wiki.geogebra.org/uploads/thumb/1/1b/Probability_calculator_interval_between.svg/180px-Probability_calculator_interval_between.svg.png[/icon]﻿[/td][td]Calculate the probability P([i]a[/i] $\le$X $\le$ [i]b[/i]) of a distribution.[u]Note[/u]: You may adjust the interval limits [i]a[/i] and [i]b[/i] by either replacing their values in the formula, or by dragging them in the graph.﻿[br][/td][/tr][tr][td]﻿[icon]https://wiki.geogebra.org/uploads/thumb/9/98/Probability_calculator_interval_left.svg/180px-Probability_calculator_interval_left.svg.png[/icon][/td][td]﻿Calculate the probability P(X$\le$[i]x[/i]) of a left sided distribution. [/td][/tr][tr][td]﻿[icon]https://wiki.geogebra.org/uploads/thumb/e/e5/Probability_calculator_interval_right.svg/180px-Probability_calculator_interval_right.svg.png[/icon][/td][td]﻿Calculate the probability P([i]x[/i]$\le$X)  of a right sided distribution. [/td][/tr][tr][td][icon]https://wiki.geogebra.org/uploads/thumb/6/60/Probability_calculator_cumulative_distribution.svg/120px-Probability_calculator_cumulative_distribution.svg.png[/icon]﻿[/td][td]﻿Toggle between the graphs of the [i]probability density function[/i] and the [i]cumulative distribution function[/i].[/td][/tr][/table]

# Statistics Calculator

The [i]Statistics Calculator[/i] allows you to conduct a variety of statistical tests. [br][list][*]Select the test you want to work with (e.g. [i]Z Test of a Mean[/i]).[/*][*]Specify your [i]Null Hypothesis.[/i][/*][*]Specify your [i]Alternative Hypothesis[/i]. [/*][*]Adjust the parameters of your test in the provided text boxes.[/*][/list][br][u]Note[/u]: The Statistics Calculator will automatically provide the results of your statistical test.
##### Instructions
[table][tr][td][size=100]1.[br][/size][/td][td][size=100]Open the tab [i]Statistics[/i].[br][/size][/td][/tr][tr][td][size=100]2[br][/size][/td][td][size=100]Choose a preferred test from the drop-down list (e.g. [i]Z Test of a Mean[/i]).[br][/size][/td][/tr][tr][td][size=100]3.[br][/size][/td][td][size=100]Enter values into the input fields.[br][/size][/td][/tr][tr][td][size=100][br][/size][/td][td][u]Hint[/u]: GeoGebra will automatically provide the results of the statistical test.[br][/td][/tr][/table][size=100][br][/size]

# How to use the Probability Calculator Style Bar

[size=100]The [i]Probability Calculator Stylebar[/i] provides options to overlay your distribution with the [i]Normal Curve[/i] and to export the graph of your distribution as a picture file (.png) and save it on your computer.[br][/size][br][b]Task 1[/b][br]Overlay the [i]Logistic[/i] distribution with the [i]Normal Curve[/i].[br][br][table][tr][td][size=100]1.﻿[/size][/td][td][size=100]﻿[/size][/td][td][size=100]﻿Select the [i]Logistic [/i]distribution from the drop- down list below the diagram.[br][/size][/td][/tr][tr][td][size=100]2.[br][/size][/td][td][size=100][icon]https://wiki.geogebra.org/uploads/thumb/4/48/Probability_calculator_normal_overlay.svg/180px-Probability_calculator_normal_overlay.svg.png[/icon][br][/size][/td][td][size=100]Overlay the [i]Logistic [/i]distribution with the Normal Curve by clicking on the [i]Overlay Normal Curve[/i] icon.[/size][/td][/tr][/table][br][br][b]Task 2[/b][br]Export the graph of your distribution and save the file on your computer.[br][br][table][tr][td][size=100]﻿1.[/size][/td][td][size=100]﻿[/size][/td][td]Select the distribution you want and adjust the parameters.[br][/td][/tr][tr][td][size=100]﻿2.[/size][/td][td][size=100]﻿[icon]https://wiki.geogebra.org/uploads/thumb/5/51/Probability_calculator_export.svg/180px-Probability_calculator_export.svg.png[/icon][/size][/td][td][size=100]Click on the [i]Export[/i] icon. ﻿[br][/size][/td][/tr][tr][td][size=100]3.﻿[/size][/td][td][size=100]﻿[/size][/td][td][size=100]﻿Save the picture file on your computer.[br][/size][/td][/tr][tr][td][size=100]4.[br][/size][/td][td][size=100][br][/size][/td][td][size=100]Insert the picture into a word processing document.[/size][/td][/tr][/table][size=100][br][/size]