COM 240 Final

population Correct Answers - A large group of people about whom we want to know something. - A parameter is a piece of information about the population. sample Correct Answers - A small group of people who represent the population. - A statistic is a piece of information about the sample that should also tell us something about the population. Confidence Level Correct Answers - The estimated probability that a population parameter lies within a given confidence interval. - Often we are 95%, 99%, or 99.9% confident - The most common or 'default' level of confidence is 95% Confidence Interval Correct Answers The range of values within which a population parameter is estimated to lie. Sampling Bias Correct Answers - Those items selected are not typical nor representative of the larger population. - Sampling bias is directly related to our selection method - It can be conscious or unconscious Sampling Error Correct Answers - The degree of error to be expected of a given sample design. - Error is not necessarily a bad thing, it's just a thing that exists - Sampling error can be minimized with large probability samples Frequency Distribution Correct Answers Displays how many times each value on a measurement scale appears in the data set.