The Elements Indicated by the Shaded Area in the Following

question 208

Multiple Choice

The elements indicated by the shaded area in the following periodic table are all

• A)metals.
• B)nonmetals.
• C)p-block elements.
• D)s-block elements.

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Definitions:

Expected Value

The predicted average outcome of a random variable, computed as the weighted average of all possible values.

Stratified Random Sampling

A probability sampling method in which the population is first divided into strata and a simple random sample is then taken from each stratum.

Strata

Subsets of a population that are known to be homogeneous with respect to some characteristic, used in stratified sampling.

Frame

A listing of the elements the sample will be selected from.