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### 33 Cards in this Set

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 data observations that have been collected statistics collection of methods for planning studies, obtaining data, organizing, summarizing, presenting, analyzing, interpreting population complete collection of elements census collection of data from every single member of the population sample subcollection of members selected from the population parameter numerical measurement describing a characteristic of a population statistic numerical measurement describing some characteristic of a sample quantitative data numbers representing measurements or counts qualitative or categorical data non numerical measurements discrete data countable number continuous data infinite values, i.e decimals ratio level of measurement a zero starting point center a representative or average value that indicates where the middle of the data set is located variation a measure of the amount that the data values vary among themselves distribution nature or shape of the distribution of the data outliers sample values that lie very far away from the vast majority of the other sample values frequency table lists data values along with their corresponding frequencies frequency number of values that fall into that particular class lower class limits smallest numbers that can belong to the different classes upper class limits largest numbers that can belong to the different classes class boundaries are numbers used to separate but without the gaps created by class limits class midpoints values in the middle of the classes class width difference between two consecutive lower class limits or two consecutive lower class boundaries relative frequency change into percents histogram bar graph horizontal on histogram class boundaries vertical on histogram use class frequencies measure of center value of the center or middle of a data set arithmetic mean adding values and dividing the total by the number of values x with a bar above it mean of a sample the muu mean of a population median middle value when data values are arranged in order midrange minimum and maximum divided by two