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How does the addition of a constant and multiplication by a constant affect the arithmetic mean?
If you add the same constant to each element of a sample then the mean of this collection of values will be the mean of the original sample plus the constant. If you multiply each element of a sample by a constant then the mean of this collection of values will be the mean of the original sample multiplied by the constant.
How does sample size affect the validity of an experiment?
The sample size has no effect on the validity of an experiment: instead, it is the experimental procedure and integrity of the experimenters.The sample size can affect conclusions that may be drawn from an experiment. The larger the sample is, the more reliable these conclusions are.
How does sample size affect the margin of error?
The larger the sample size, the smaller the margin of error.
Explain the differences between a sample and a population?
A sample consists of a small portion of data when a population is taken from a large amount.
What is a cluster sample example?
IT IS A AMOUNT OF SOME THING . CLUSTER OF STARS
How does halving the sample affect the density?
Not at all. The density remains the same.
How does halving a sample affect the weight of the sample?
If the sample is homogeneous, then half of its volume has half of its mass and half of its weight.
What effect does the amount of the sample of a substance affect its density?
it has no effect. density of a substance is the same no matter the size or shape of the sample.
How does the addition of a constant and multiplication by a constant affect the arithmetic mean?
If you add the same constant to each element of a sample then the mean of this collection of values will be the mean of the original sample plus the constant. If you multiply each element of a sample by a constant then the mean of this collection of values will be the mean of the original sample multiplied by the constant.
Is it true or false that characteristic properties of elements do not depend on the amount of material present in a sample of the element?
True. Characteristic properties of elements, such as melting point, boiling point, density, and chemical reactivity, do not depend on the amount of material present in a sample of the element. These properties are unique to each element and remain constant regardless of the quantity of the substance.
The color of light given off when a sample is heated corresponds to?
The color of light given off when a sample is heated corresponds to the energy levels of the electrons in the atoms of the sample. Each element emits light at specific wavelengths, creating a unique spectral signature that can be used to identify elements. This phenomenon is known as atomic emission spectroscopy.
How much time is needed for half the amount of the sample of an element to decay?
The half-life has a specific value for each isotope.
What three types of information are needed on order to find an empirical formula from percentage composition data?
· Assume that you have 100.0 g sample of the compound · Calculate the amount of each element in the sample · Convert the mass composition of each element to a composition in moles by dividing by the appropriate molar mass
What is a property that does not depend on the amount of element?
Density is a property that does not depend on the amount of an element. It is an intensive property, meaning it remains constant regardless of the sample size.
What is the difference between sample and sample size?
a sample is a sample sized piece given... a sample size is the amount given in one sample
How does increasing the sample size affect the sample error of the mean?
It should reduce the sample error.
As a sample of a radioactive element decays its half-life?
The half-life of a radioactive element is the time it takes for half of the atoms in a sample to decay. As the sample decays, the number of radioactive atoms decreases while the number of stable atoms increases. The process continues in this manner, with each half-life reducing the amount of radioactive material by half.
