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MM Spring 2015
Math Models Spring 2017 Exam Vocabulary
| Question | Answer |
|---|---|
| stem and leaf plot | a visual representation of data in which the unit's and ten's are represented in separate columns |
| statistics | collecting, organizing,analyzing, ainterpreting data and drawing conclusions based on the data |
| measures of central tendencies | statistical values generally located toward the center of the distribution |
| frequency polygon | line graph which connects midpoints of the histogram bars |
| data value | numerical value associated with a data item |
| data | numerical information |
| grouped frequency distribution | data items organized into appropriate numerical groups |
| permutations | an arrangement of non-repeating items in which order does matter |
| event | a subset of the sample space |
| experiment | any occurrence for which the outcome is uncertain |
| factorial | product of all of the positive integers n down through 1 |
| sample space | set of all possible outcomes of an experiment |
| combinations | an arrangement of non-repeating items in which order does not matter |
| empirical probability | based on situations in which occurrence of events is observed |
| theoretical probability | based on situations in which the set of all equally likely outcomes is known |
| median | data item, or mean of two data items, that is in the middle of a set of ranked, or ordered, data |
| midrange | the average if the highest and lowest value data items in a set of data |
| range | the difference between the highest and lowest value data items in a set of data |
| standard deviation | measurement of dispersion of a data set calculated using the deviation from the mean |
| normal distribution | bell-shaped symmetrical graph with mean, median and mode all equal. |
| mode | data item that occurs the most often in a set of data |
| histogram | bar graph in which bars touch and the frequency is the vertical axis |
| inferential statistics | draws conclusions from collected data |
| descriptive statistics | concerned with collecting, organizing, summarizing, and presenting data |
| sample | a subset or subgroup of the population |
| population | set containing all people or objects described and analyzed by data collector |
| random sample | sample obtained in such a way that every element in the population has an equal chance of being selected for the sample |
| z-score | describes how many standard deviations a data item in a normal distribution lies above or below the mean |
| double root | solution of an equation that occurs two times |
| cubic equation | a polynomial equation of degree three |
| linear equation | a polynomial equation of degree one |
| quadratic equation | a polynomial equation of degree two |
| Zero Product Property | If ab=0, then either a=0, or b=0 |
| conjugates | two binomials that are the sum and difference of the same two terms |
| difference of squares | product of conjugates |
| matrix | rectangular array of values |
| dimensions of matrix | number of elements in row x columns |
Created by:
mcchesney
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