float Sampel[] = {75.2, 82.0, 83.7, 74.4, 80.1, 85.5, 82.0, 80.1};
void setup()
{
  Serial.begin(9600);

  
}

void loop() {

byte jumlahSampel = sizeof(Sampel) / sizeof(Sampel[0]);
 
float jumlah = 0;
for (int i = 0; i < jumlahSampel; i++)
{
  jumlah += Sampel[i];
}
float mean = jumlah / jumlahSampel;
Serial.print("mean = ");
Serial.println(mean);
}