Added mean function in Arithmetic Progression Calculator (#1791)

Calculators/Arithmetic-Progression-Calculator/README.md

@@ -2,7 +2,7 @@
 
 ## Description :-
 
-Calculates nth Term and sum of n Terms present in an Arithematic Sequence.
+Calculates nth Term, arithmetic mean and sum of n Terms present in an Arithematic Sequence.
 
 ## Tech Stacks :-
 

Calculators/Arithmetic-Progression-Calculator/index.html

@@ -27,6 +27,7 @@ <h1>Arithmetic Progression Calculator</h1>
         <select id="calculationType">
             <option value="nthTerm">Nth Term</option>
             <option value="sumOfTerms">Sum of First N Terms</option>
+            <option value="arithMean">Arithmetic Mean</option>
         </select>
 
         <button onclick="calculate()">Calculate</button>

Calculators/Arithmetic-Progression-Calculator/script.js

@@ -5,6 +5,11 @@ function calculate() {
     const termNumber = parseInt(document.getElementById('termNumber').value);
     const calculationType = document.getElementById('calculationType').value;
 
+    // For checking empty values    
+    if (isNaN(firstTerm) || isNaN(commonDifference) || isNaN(termNumber)) {
+        document.getElementById("result").innerText = "Please enter the valid numbers for all fields.";
+        return;
+    }
     // Perform the selected calculation
     let result;
     if (calculationType === 'nthTerm') {
@@ -13,6 +18,9 @@ function calculate() {
     } else if (calculationType === 'sumOfTerms') {
         // Calculate the sum of the first n terms
         result = calculateSumOfTerms(firstTerm, commonDifference, termNumber);
+    } else if (calculationType === 'arithMean') {
+        // Calculate the arithmetic mean of terms
+        result = calculateArithMean(firstTerm, commonDifference, termNumber);
     }
 
     // Display the result
@@ -29,3 +37,8 @@ function calculateSumOfTerms(firstTerm, commonDifference, termNumber) {
     // Calculate the sum of the first n terms
     return `The sum of the first ${termNumber} terms is: ${(termNumber / 2) * (2 * firstTerm + (termNumber - 1) * commonDifference)}`;
 }
+
+function calculateArithMean(firstTerm, commonDifference, termNumber) {
+    // Calculate the arithmetic mean of terms
+    return `The arithmetic mean of ${termNumber} terms is: ${(1 / 2) * (2 * firstTerm + (termNumber - 1) * commonDifference)}`;
+}

index.html

@@ -370,7 +370,7 @@ <h3>Calculates nth Term and sum of n Terms of the Arithmetic Geometric Sequence.
         <div class="box">
             <div class="content">
                 <h2>Arithmetic Progression Calculator</h2>
-                <h3>Calculates nth Term and sum of n Terms present in an Arithmetic Sequence.</h3>
+                <h3>Calculates nth Term, arithmetic mean and sum of n Terms present in an Arithmetic Sequence.</h3>
                 <div class="card-footer">
                     <a href="./Calculators/Arithmetic-Progression-Calculator/index.html" target="_blank">
                         <button>Try Now</button>