update

src/cli.ts

@@ -424,19 +424,23 @@ export async function startup(argv: any, version?: string, tracer?: Tracer, ctx?
 }
 
 /**
- * Calculates the opps count standard deviation from the avg of the given length of previous rounds records
+ * Calculates the opps count standard deviation from the given length of previous rounds records
  */
 export const handleOppsRecord = (
     recordSize: number,
     previousRecords: number[],
     oppCount: number,
 ): number => {
     const avg = Math.floor(previousRecords.reduce((a, b) => a + b, 0) / previousRecords.length);
+    const sumOfSquaresAvg =
+        previousRecords.map((v) => (avg - v) ** 2).reduce((a, b) => a + b, 0) /
+        previousRecords.length;
+    const stdvsRounup = Math.round(Math.sqrt(sumOfSquaresAvg)); // roundup
     previousRecords.push(oppCount);
     if (previousRecords.length > recordSize) {
         previousRecords.splice(0, previousRecords.length - recordSize);
     }
-    return oppCount - avg;
+    return oppCount - stdvsRounup;
 };
 
 export const main = async (argv: any, version?: string) => {

test/cli.test.js

@@ -218,11 +218,11 @@ describe("Test cli", async function () {
     });
 
     it("test handleOppsRecord()", async function () {
-        const record = [3, 4, 5, 3, 3, 7, 4];
-        const size = 7;
+        const record = [6, 2, 3, 1];
+        const size = 4;
         const currentOppCount = 1;
         const result = handleOppsRecord(size, record, currentOppCount);
-        const expected = -3;
+        const expected = -1;
         assert.equal(result, expected);
     });
 });