diff --git a/extensions/community/Statistics.json b/extensions/community/Statistics.json
new file mode 100644
index 000000000..b3bc7c39e
--- /dev/null
+++ b/extensions/community/Statistics.json
@@ -0,0 +1,1519 @@
+{
+ "author": "",
+ "category": "General",
+ "extensionNamespace": "",
+ "fullName": "Normal Distribution Statistics",
+ "gdevelopVersion": "",
+ "helpPath": "https://wiki.gdevelop.io/gdevelop5/tutorials/randomness/#chose-better-random-sequences",
+ "iconUrl": "data:image/svg+xml;base64,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",
+ "name": "Statistics",
+ "previewIconUrl": "https://asset-resources.gdevelop.io/public-resources/Icons/864a93d4274c7c7c62e95b113c4cfe061df2363cadc747ba02de8e43aed57fce_chart-bell-curve.svg",
+ "shortDescription": "Basic statistcs functions for normal distributions.",
+ "version": "1.1.0",
+ "description": [
+ "Its main function is the \"normal random number generator\" (NormalRNG). This function generates a random number that follows a normal (bell-shaped) distribution. Such distribution has a central tendency value (mean) and a margin of deviation (standard deviation, or StdDev). NormalRNG is bounded so that extreme values (abnormally high or small numbers, called outliers) do not occur.",
+ "",
+ "This extension also includes a library of common values to check for probability, be it the chance of being above a certain number (\"One-Tail\"), the chance of being different to a population (\"Two-tails\"), or the chance of being in a range. Probabilities are given in percentage and coded as pXXX. For example, p950 gives the 95.0% probability.",
+ "",
+ "As support, the extension also can generate Z-values (distance between the mean and the number, measured in StdDev), calculate and compare them with others (as Z-Scores).",
+ "",
+ "This covers the basics on normal distributions. For an implementation example take a look here:",
+ "https://gd.games/arelaestudio/statistics-example",
+ "",
+ "Principles of randomness can be found in:",
+ "https://wiki.gdevelop.io/gdevelop5/tutorials/randomness/#chose-better-random-sequences",
+ "",
+ "Foundations on the extension can be found here:",
+ "https://en.wikipedia.org/wiki/Normal_distribution#Computational_methods",
+ "https://en.wikipedia.org/wiki/Irwin%E2%80%93Hall_distribution",
+ "https://en.wikipedia.org/wiki/One-_and_two-tailed_tests",
+ "https://en.wikipedia.org/wiki/Standard_score"
+ ],
+ "tags": [
+ "random",
+ "probability",
+ "statistics"
+ ],
+ "authorIds": [
+ "JJYR7q4MEBS2ap7ziDiYGlY40Fi2"
+ ],
+ "dependencies": [],
+ "globalVariables": [],
+ "sceneVariables": [
+ {
+ "name": "pCheck",
+ "type": "number",
+ "value": 0
+ },
+ {
+ "folded": true,
+ "name": "OneTail",
+ "type": "structure",
+ "children": [
+ {
+ "name": "p010",
+ "type": "number",
+ "value": -2.32634787404
+ },
+ {
+ "name": "p025",
+ "type": "number",
+ "value": -1.95996398454
+ },
+ {
+ "name": "p050",
+ "type": "number",
+ "value": -1.64485362695
+ },
+ {
+ "name": "p083",
+ "type": "number",
+ "value": -1.38299434452
+ },
+ {
+ "name": "p100",
+ "type": "number",
+ "value": -1.28155156554
+ },
+ {
+ "name": "p125",
+ "type": "number",
+ "value": -1.15034938038
+ },
+ {
+ "name": "p150",
+ "type": "number",
+ "value": -1.03643338949
+ },
+ {
+ "name": "p167",
+ "type": "number",
+ "value": -0.96742159278
+ },
+ {
+ "name": "p200",
+ "type": "number",
+ "value": -0.84162123357
+ },
+ {
+ "name": "p250",
+ "type": "number",
+ "value": -0.6744897502
+ },
+ {
+ "name": "p300",
+ "type": "number",
+ "value": -0.52440051271
+ },
+ {
+ "name": "p333",
+ "type": "number",
+ "value": -0.43072730021
+ },
+ {
+ "name": "p350",
+ "type": "number",
+ "value": -0.38532046641
+ },
+ {
+ "name": "p375",
+ "type": "number",
+ "value": -0.31863936396
+ },
+ {
+ "name": "p400",
+ "type": "number",
+ "value": -0.25334710314
+ },
+ {
+ "name": "p417",
+ "type": "number",
+ "value": -0.21042841133
+ },
+ {
+ "name": "p450",
+ "type": "number",
+ "value": -0.12566134686
+ }
+ ]
+ },
+ {
+ "folded": true,
+ "name": "TwoTails",
+ "type": "structure",
+ "children": [
+ {
+ "name": "p683",
+ "type": "number",
+ "value": 1
+ },
+ {
+ "name": "p750",
+ "type": "number",
+ "value": 1.15034938038
+ },
+ {
+ "name": "p900",
+ "type": "number",
+ "value": 1.64485362695
+ },
+ {
+ "name": "p950",
+ "type": "number",
+ "value": 1.95996398454
+ },
+ {
+ "name": "p990",
+ "type": "number",
+ "value": 2.57582930355
+ },
+ {
+ "name": "p997",
+ "type": "number",
+ "value": 3
+ },
+ {
+ "name": "p999",
+ "type": "number",
+ "value": 6
+ }
+ ]
+ },
+ {
+ "name": "ZScore",
+ "type": "number",
+ "value": 0
+ }
+ ],
+ "eventsFunctions": [
+ {
+ "description": "Generates a random number that follows a normal distribution. Bound to avoid extreme values.",
+ "fullName": "Normalized random number",
+ "functionType": "Expression",
+ "name": "NormalRNG",
+ "sentence": "",
+ "events": [
+ {
+ "type": "BuiltinCommonInstructions::Standard",
+ "conditions": [],
+ "actions": [
+ {
+ "type": {
+ "value": "SetReturnNumber"
+ },
+ "parameters": [
+ "clamp(Mean+(StdDev*Statistics::Zvalue()), Mean-(StdDev*TwoTails[Bounds]), Mean+(StdDev*TwoTails[Bounds]))"
+ ]
+ }
+ ]
+ }
+ ],
+ "expressionType": {
+ "type": "expression"
+ },
+ "parameters": [
+ {
+ "description": "Mean",
+ "name": "Mean",
+ "type": "expression"
+ },
+ {
+ "description": "Standard deviation (1 sigma)",
+ "name": "StdDev",
+ "type": "expression"
+ },
+ {
+ "description": "Bounds (p997 recommended)",
+ "name": "Bounds",
+ "supplementaryInformation": "[\"p683\",\"p750\",\"p900\",\"p950\",\"p990\",\"p997\",\"p999\"]",
+ "type": "stringWithSelector"
+ }
+ ],
+ "objectGroups": []
+ },
+ {
+ "description": " the probability of the number against a normal distribution.",
+ "fullName": "One-Tail test",
+ "functionType": "ExpressionAndCondition",
+ "name": "OneTail",
+ "sentence": "_PARAM1_ chance of being _PARAM4_ against a normal distribution (Mean:_PARAM2_; StdDev:_PARAM3_)",
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+}
\ No newline at end of file