They are demographic variables.
Mean is the average.
Voluntary response samples are things like mail-out surveys. The participants could choose to participate or not. This causes some forms of bias, because the only participants usually have strong opinions on the subject. People who care less are less likely to respond, leaving them out of the demographic.
I didn't mean what I said. What does antidisestablishmentarianism mean? My sister is mean. I don't like being mean. The mean of a set of values is the average. The mean temperature is much lower in the valley in spring.
The population mean is the mean value of the entire population. Contrast this with sample mean, which is the mean value of a sample of the population.
Demographic change means there has been a change in the population. The demographic can change in terms of its size, the age of the demographic, lifestyle expectations etc.
Previous Name
The answer depends on what you mean by a trapezoidal trough. Is it a trough whose cross-section is a rectangle at any height but which increases linearly with the height or is it a trough whose base and each face is a trapezium.
'Product demographic' refers to the segment of society that a product will provide the best sales of the product. A company must know the correct demographic for a product in order to design it to appeal to that demographic and design the sales activities to target that demographic.
See while you are sawin . . What does trough mean?
Trough
demographic means the statistical study of human population
Do you mean trout or trough? Please give some context to your question.
A very old trough. A hard-wearing trough. A durable trough. One tough trough.
A trough is a depression in the surface or shape being examined. For example: 1. A valley between Mountains is a trough. 2. The dip between waves is a trough. 3. Hold out your hand and spread your fingers. The area between your fingers are troughs.
The closest word in Spanish I can come up with is: tolla - which means: trough
a trough or fold of stratified rock in which the strata slope upward from the axis.