No, equal volumes do not always mean equal masses. The mass of a substance depends on its density, which is the mass per unit volume. If two substances have different densities, equal volumes will result in different masses. For example, a liter of water weighs more than a liter of oil because water is denser than oil.
The result of mixing equal MASSES of water at different temperatures will be the mean of the two temperatures. Unless you are being very sophisticated and are taking the thermal expansion into account, the same will apply to volumes.
Co can mean joint, together or the similar; however it doesn't always mean equal. For example: co-owners in a business are both owners. However, they do not necessarily have to have equal ownership.
No.
The geometric mean, if it exists, is always less than or equal to the arithmetic mean. The two are equal only if all the numbers are the same.
If you mean in Excel, yes: you must always start a formula with an equal sign.
Not necessarily. Equal volumes do not always mean equal masses because different substances have different densities. Denser substances will have more mass in a given volume compared to less dense substances.
The result of mixing equal MASSES of water at different temperatures will be the mean of the two temperatures. Unless you are being very sophisticated and are taking the thermal expansion into account, the same will apply to volumes.
No. They are equal only if the distribution is symmetrical.
If by "equal" you mean "equal in length", yes, that is the same as "congruent".
Co can mean joint, together or the similar; however it doesn't always mean equal. For example: co-owners in a business are both owners. However, they do not necessarily have to have equal ownership.
No.
No, equal does not mean fair even though it may be fair.
The geometric mean, if it exists, is always less than or equal to the arithmetic mean. The two are equal only if all the numbers are the same.
If you mean in Excel, yes: you must always start a formula with an equal sign.
The z score for the mean is always 0.
No, the mean of a standard normal distribution is not equal to 1; it is always equal to 0. A standard normal distribution is characterized by a mean of 0 and a standard deviation of 1. This distribution is used as a reference for other normal distributions, which can have different means and standard deviations.
Any number to the power of 0 is always equal to 1