Samples, populations, and Mean

A sample is a subset of individuals or objects selected from a larger population for the purpose of conducting a survey or study.

A population is the entire group of objects or individuals considered for a survey.

False

A random sample is a subset of a population in which each member has an equal chance of being selected.

A study is unbiased if it accurately represents the population without favoritism or prejudice.

The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

A representative sample ensures that the results of a survey or study can be generalized to the entire population.

Bias in sampling occurs when certain members of a population are more likely to be selected than others, leading to skewed results.

Ana should survey thirty randomly selected students from her school.

A biased study is one that does not accurately reflect the population due to poor sampling methods.