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PLTW Statistics K.T.
Key Terms for 3.5 Statistics
Question | Answer |
---|---|
Class Interval | A group of values that is used to analyze the distribution of data. |
Data | Facts and statistics used for reference or analysis. |
Data Set | A group of individual values or bits of information that are related in some way or have some common characteristic or attribute. |
Frequency | The rate at which something occurs over a particular period or in a given sample. |
Histogram | A graph of vertical bars representing the frequency distribution of a set of data. |
Mean | A measure of center in a set of numerical data, computed by adding the values in a list and then dividing by the number of values in the list. |
Median | A measure of center in a set of numerical data. The median of a list of values is the value appearing at the center of a sorted version of the list – or the mean of the two central values if the list contains an even number of values. |
Mode | The value that occurs most frequently in a given data set. |
Normal Distribution | A function that represents the distribution of variables as a symmetrical bell-shaped graph. |
Scatter Plot | A graph in the coordinate plane representing a set of bivariate data. |
Standard Deviation | The distance of a value in a population (or sample) from the mean value of the population (or sample). |
Statistics | Collection of methods for planning experiments, obtaining data, organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions based on data. |
Variation | A change or slight difference in condition, amount, or level. |