# mean

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Related to mean: standard deviation

## mean

[mēn]an average; a number that in some sense represents the central value of a set of numbers.

## mean

(mēn),A statistical measurement of central tendency or average of a set of values, usually assumed to be the arithmetic mean unless otherwise specified.

[M.E.,

*mene*fr. O.Fr., fr. L.*medianus*, in the middle]## mean

(mēn) an average; a numerical value that in some sense represents the central value of a set of numbers.**arithmetic mean**the sum of

*n*numbers divided by

*n.*

**geometric mean**the

*n*th root of the product of

*n*numbers.

## mean

Etymology: ME,

*mene,*in the middleoccupying a position midway between two extremes of a set of values or data. The arithmetic mean is a value that is derived by dividing the total of a set of values by the number of items in the set. The geometric mean is a value between the first and last of a set of values organized in a geometric progression. Compare median, mode.

## mean

Statisticsnoun The sum of the values of all observations or data points divided by the number of observations; an arithmetical average; the central tendency of a collection of numbers, which is a sum of the numbers divided by the amount of numbers the collection.

Types

• Population mean (µ).

• Sample mean (x-bar).

Vox populi-UK

adjective Stingy; miserly; unwilling to share.

Vox populi-US

adjective Unkind, spiteful.

## mean

Statistics The sum of values divided by number of values. See Arithmetric mean, Geometric mean, Weighted mean.## mean

(mēn)A statistical measurement of central tendency or average of a set of values, usually assumed to be the arithmetic mean unless otherwise specified.

[M.E.,

*mene*fr. O.Fr., fr. L.*medianus*, in the middle]## mean

see ARITHMETIC MEAN.## mean

(mēn)Statistical measurement of central tendency or average of a set of values, usually assumed to be arithmetic mean.

[M.E.,

*mene*fr. O.Fr., fr. L.*medianus*, in the middle]## mean

an average; a numerical value intermediate between two extremes. Called also arithmetic mean.

**mean arterial pressure**

average pressure in artery for one heartbeat.

**mean cell constants**

see erythrocyte indices.

**mean corpuscular hemoglobin (MCH)**

see mch.

**mean corpuscular hemoglobin concentration (MCHC)**

see mchc.

**mean corpuscular volume (MCV)**

see mcv.

**mean deviation**

the average value of a set of absolute deviations from the mean of a set of observations.

**mean electrical axis (MEA)**

in electrocardiography, a calculation based on the relative amplitude of Q, R and S waves in the three bipolar limb leads. It is an aid to recognizing right ventricular enlargement and various intraventricular conduction defects.

**geometric mean**

the antilog of the mean of the logarithm of the calculated values, the same as the n

^{th}root of the product of the values. It is often a more useful mean for growth curves.**harmonic mean**

the reciprocal of the arithmetic mean of values converted to their reciprocals (used in dealing with skewed data).

**rolling mean**

see moving average.

## Patient discussion about mean

**Q. I mean what this fitness is all about…..** I know nutritious diet is important for good health but why is the need for fitness …..I mean what this fitness is all about…..

**A.**Fitness can help you live longer and has been proven to help the body, muscles, bones not age as much as if you were inactive...

**Q. why do you call Bipolar ... Bipolar? i mean what does it mean? **

**A.**Bipolar disorder is called this way because it is charecterized by two types of obvious mood disorders- depression on the one side, and mania, or hypomania (a manic state, or 'high'), on the other side.

**Q. Does ascites mean it's the end?** My mother, age 65 was diagnosed with ovarian cancer in a routine US examination. It was also diagnosed she already has mild ascites. Does that mean her cancer is metastatic?

**A.**Ascites can render the staging of the cancer as metastatic, but it depends on the specific characters of the ascites, so further testing is needed here.