Why is this javascript arthimetic not working?

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Javascript

Hello Coders,

Please forgive a very basic Q from someone learning Javascript on the fly. My problem relates to a very complex form in which I need to dyanmically re-calculate some field values if the user changes the values of other fields, all of which happen to be selects. I've created the function, associated it to the onchange for each field that should trigger it, retrieved the necessary field values etc, all fine. My problem is that the arithmetic formula is not working correctly. It's meant to average 6 numeric input values, but I am getting incorrect results. Here's the Javascript function which fetches the field values and re-calculates the dependent values which we call QI's:

// Declare function to re-calculate QI's whenever a key field value changes
function qirecalc() {
	// Setup LOV arrays	
	const charactervals     = { 'Bland': 2, 'Nervous': 2, 'Monotonous': 3, 'Elusive': 3, 'Rustic': 4, 'Determined': 4, 
                                        'Lively': 4, 'Invigorating': 4, 'Elegant': 5, 'Ethereal': 5, 'Sublime': 5 };	
	const richnessvals      = {'Harmonic' : 5, 'Balanced' : 4, 'Somewhat Balanced' : 3, 'Limited Balance' : 1};
	const complexityvals    = {'Excellent' : 5, 'Good' : 4, 'Medium' : 3.5, 'Poor' : 1 };
	const evolutionvals     = {'Excellent' : 5, 'Good' : 4, 'Medium' : 3.8, 'Poor' : 1 };
	const valuevals         = {'Excellent' : 5, 'Good' : 4, 'Medium' : 3.5, 'Low' :	1 };
	const qualityvals       = {'Excellent' : 5, 'Fine' : 4.5, 'Common' : 3.5, 'Poor' : 1};
	const persistencevals   = {'Very Long' : 5, 'Long' : 4, 'Medium' : 3.5, 'Short' :	1 };
	const sensationvals     = {'Irritable' : 1, 'Unripe' :	1.25, 'Airy' : 3.5, 'Thick' : 4, 'Well-rounded' : 4.5, 'Smooth' : 4.8, 'Very smooth' : 5 };
    
	// Get the field values used to calculate the Organoleptic, Conclusive and Overall Quality Indexes
	var richnessval     = richnessvals[document.getElementById("organoleptic_richness").value];
	var complexityval   = complexityvals[document.getElementById("complexity").value];
	var persistenceval  = persistencevals[document.getElementById("persistence").value];
	var qualityval      = qualityvals[document.getElementById("organoleptic_quality").value];
	var characterval    = charactervals[document.getElementById("character").value];
	var sensationval    = sensationvals[document.getElementById("key_sensation").value];
	var valueval        = valuevals[document.getElementById("value_for_price").value];
	var evolutionval    = evolutionvals[document.getElementById("evolution").value];
    
	var off_qi = document.getElementById("off-flavors_qi").value;
	var mqi = Number(document.getElementById("mechanical_qi").value);

	// Re-calculate the Organoleptic, Conclusive and Overall Quality Indexes
	var oqi = (richnessval + complexityval + evolutionval + persistenceval + qualityval + off_qi) / 6;
	console.log("richnessval = " + richnessval);
	console.log("complexityval = " + complexityval);
	console.log("persistenceval = " + persistenceval);
	console.log("qualityval = " + qualityval);
	console.log("off_qi = " + off_qi);
	console.log("evolutionval = " + evolutionval);
	console.log("oqi = " + oqi);

	var cqi = (sensationval + characterval + valueval)/3;
	var number = (cqi + oqi + mqi) / 3;
	var overall = Math.round(number * 10 ) / 10;
	console.log("mqi = " + mqi);
	console.log("cqi = " + cqi);
	console.log("overall = " + overall);
    
	// Update the Organoleptic, Conclusive & Overall QI fields with their new values and exit
	var oqistr = Math.round(oqi * 10 ) / 10;
	var cqistr = Math.round(cqi * 10 ) / 10;
	// document.forms['consol-form']['organoleptic_qi'].value = oqistr;
	// document.forms['consol-form']['conclusive_considerations_qi'].value = cqistr;
	// document.forms['consol-form']['overall_quality_index'].value = overall;
    
	return false;
}

Here's a sample of the console output:
richnessval = 3 ?cigarid=2138:806
complexityval = 3.5 ?cigarid=2138:807
persistenceval = 3.5 ?cigarid=2138:808
qualityval = 4.5 ?cigarid=2138:809
off_qi = 4 ?cigarid=2138:810
evolutionval = 3.8 ?cigarid=2138:811
oqi = 3.0566666666666666

With these values the correct result for oqi is 3.7166666, but I am getting 3.05666. Such a simple formula, I guess I'm over-looking something...

Any suggestions as to why the formula is not written/working correctly would be greatly appreciated!

What I have tried:

// Declare function to re-calculate QI's whenever a key field value changes
function qirecalc() {
	// Setup LOV arrays	
	const charactervals     = { 'Bland': 2, 'Nervous': 2, 'Monotonous': 3, 'Elusive': 3, 'Rustic': 4, 'Determined': 4, 
                                        'Lively': 4, 'Invigorating': 4, 'Elegant': 5, 'Ethereal': 5, 'Sublime': 5 };	
	const richnessvals      = {'Harmonic' : 5, 'Balanced' : 4, 'Somewhat Balanced' : 3, 'Limited Balance' : 1};
	const complexityvals    = {'Excellent' : 5, 'Good' : 4, 'Medium' : 3.5, 'Poor' : 1 };
	const evolutionvals     = {'Excellent' : 5, 'Good' : 4, 'Medium' : 3.8, 'Poor' : 1 };
	const valuevals         = {'Excellent' : 5, 'Good' : 4, 'Medium' : 3.5, 'Low' :	1 };
	const qualityvals       = {'Excellent' : 5, 'Fine' : 4.5, 'Common' : 3.5, 'Poor' : 1};
	const persistencevals   = {'Very Long' : 5, 'Long' : 4, 'Medium' : 3.5, 'Short' :	1 };
	const sensationvals     = {'Irritable' : 1, 'Unripe' :	1.25, 'Airy' : 3.5, 'Thick' : 4, 'Well-rounded' : 4.5, 'Smooth' : 4.8, 'Very smooth' : 5 };
    
	// Get the field values used to calculate the Organoleptic, Conclusive and Overall Quality Indexes
	var richnessval     = richnessvals[document.getElementById("organoleptic_richness").value];
	var complexityval   = complexityvals[document.getElementById("complexity").value];
	var persistenceval  = persistencevals[document.getElementById("persistence").value];
	var qualityval      = qualityvals[document.getElementById("organoleptic_quality").value];
	var characterval    = charactervals[document.getElementById("character").value];
	var sensationval    = sensationvals[document.getElementById("key_sensation").value];
	var valueval        = valuevals[document.getElementById("value_for_price").value];
	var evolutionval    = evolutionvals[document.getElementById("evolution").value];
    
	var off_qi = document.getElementById("off-flavors_qi").value;
	var mqi = Number(document.getElementById("mechanical_qi").value);

	// Re-calculate the Organoleptic, Conclusive and Overall Quality Indexes
	var oqi = (richnessval + complexityval + evolutionval + persistenceval + qualityval + off_qi) / 6;
	console.log("richnessval = " + richnessval);
	console.log("complexityval = " + complexityval);
	console.log("persistenceval = " + persistenceval);
	console.log("qualityval = " + qualityval);
	console.log("off_qi = " + off_qi);
	console.log("evolutionval = " + evolutionval);
	console.log("oqi = " + oqi);

	var cqi = (sensationval + characterval + valueval)/3;
	var number = (cqi + oqi + mqi) / 3;
	var overall = Math.round(number * 10 ) / 10;
	console.log("mqi = " + mqi);
	console.log("cqi = " + cqi);
	console.log("overall = " + overall);
    
	// Update the Organoleptic, Conclusive & Overall QI fields with their new values and exit
	var oqistr = Math.round(oqi * 10 ) / 10;
	var cqistr = Math.round(cqi * 10 ) / 10;
	// document.forms['consol-form']['organoleptic_qi'].value = oqistr;
	// document.forms['consol-form']['conclusive_considerations_qi'].value = cqistr;
	// document.forms['consol-form']['overall_quality_index'].value = overall;
    
	return false;
}