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Pre-Algebra Ch 10
Pre-Algebra Ch. 10 vocabulary
| Term | Definition |
|---|---|
| biased sample | a sample that is not representative of a population |
| box plot | a diagram that divides a set of data into four parts using the median and quartiles. A box is drawn around the quartile values and whiskets extend from each quartile to the extreme data points |
| complement | one of two parts of a probability making a whole |
| compound event | two or more simple events |
| convenience sample | a sample which includes members of the population that are easily accessed |
| distribution | (p.452) shows the arrangement of a set of data values |
| double box plot | two box plots graphed on the same number line |
| experimental probability | what actually occcurs in a probability experiment |
| first quartile (Q1) | for a data set with median M, the first quartile is the median of the data values less than M |
| Fundamental Counting Principle | (p.483) If event M can occur in m ways and is followed by event N that can occur n ways, then the event M followed by event N can occur in m(n) ways |
| interquartile range | the range of the middle half of a set of data. It is the difference between the first quartile and the third quartile. |
| mean absolute deviation | the average distance between each data value and the mean |
| measures of center | For a list of numerical data, numbers that can represent the center of the data (mean, median, mode) |
| measures of variability | used to describe the distribution of statistical data (range, first quartile, third quartile, interquartile range) |
| outcome | possible result of a probability experiment |
| outliers | data that are more than 1.5 times the interquartile range beyond the quartiles |
| population | a larger group used in statistical analysis |
| probability | the ratio of the number of ways a certain event can occur to the number of possible outcomes |
| quartiles | the values that divide a set of data into four equal parts |
| random | outcomes occur at random if each outcome is equally likely to occur |
| range | a measure of variation that is the difference between the least and greatest values in a set of data |
| relative frequency | (p.475) the ratio of the number of experimental successes to the number of experimental attempts |
| sample | a subgroup or subset of a population used to represent the whole population |
| sample space | the set of all possible outcomes |
| simple event | one outcome or a collection of outcomes |
| simple random sample | a sample where each item or person in the population is as likely to be chosen as any other |
| simulation | a way of modeling a problem situation or event that would be too difficult or impractical to actually perform |
| statistics | the branch of mathematics that deals with collecting, organizing, and interpreting data |
| stratified random sample | (p. 462) the population is divided into similar, nonoverlapping groups. A simple random sample is then selected from each group. |
| systematic random sample | a sampling method in which the items or people are selected according to a specific time or item interval |
| theoretical probability | what should occur in a probability experiment |
| third quartile (Q3) | For a data set with median M, the third quartile is the median of the data values greater than M |
| tree diagram | a diagram used to show the total number of possible outcomes |
| unbiased sample | a random sample that is representative of a larger sample |
| uniform probability model | a model in which each outcome has an equal propability of occurring |
| visual overlap | (p.452) a visual demonstration of two distributions with similar variation that compares their centers to their variation or spread |
| voluntary response sample | a sample which involves only those who want to participate in the sampling |
Created by:
msjonesbss
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