This is the set of Chapter 1 Vocabulary for statistics
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| 662779046 | Population | entire set of subjects with the characteristics of interest to a researcher | |
| 662779047 | statistician | one who specializes in the preparation and application of the statistical methods | |
| 662779048 | variable | any measurable characteristic in a population or sample | |
| 662779049 | data | set of values or evidence collected from each unit | |
| 662779050 | unit | a member of the population | |
| 662779051 | categorical variable | a qualitative characteristic that can be placed into neatly defined groups | |
| 662779052 | numerical variable | a quantitative characteristics that can be measured using numerical information | |
| 662779053 | discrete numerical variable | characteristic that can only have values at specific values | |
| 662779054 | continuous numerical variable | characteristic that can have any possible value | |
| 662779055 | sample | subset of the population | |
| 662779056 | parameter | characteristic of the population, numeric quantity that describes the population | |
| 662779057 | statistic | numeric calculated characteristic of a sample | |
| 662779058 | Sampling error | the difference between the true parameter and the statistic obtained using sampling | |
| 662779059 | nominal measurements | discrete, categorical variables | |
| 662779060 | ordinal measurements | ordered measurements (not placed on a scale) | |
| 662779061 | interval measurements | equal leveled increments on a scale (no particular zero off point) | |
| 662779062 | ratio measurements | equal leveled increments on a scale with a meaningful zero point | |
| 662779063 | observational study | long term approach to collecting data by making detailed observation | |
| 662779064 | longitudinal study | an observational study where the same group of subjects are observed over a long period of time | |
| 662779065 | experiments | a researcher imposes a treatment on a group of subjects or objects to determine a "cause and effect" relationship | |
| 662779066 | Mode | the number in the data set that has the highest frequency | |
| 662779067 | bimodal | two numbers in a data set that have the same highest frequency | |
| 662779068 | Mean | the arithmetic average of the data | |
| 662779069 | median | the number that is in the middle of an ordered set of data values | |
| 662779070 | outlier | a data value that is considered extreme and falls far outside the range of the other values in the data set | |
| 662779071 | resistance | a statistic that is not affected by an outlier in the data | |
| 662779072 | sample mean | x bar = (∑x₁+x₂+ ...+xn))/(n) | |
| 662779073 | Population mean | μ= (∑(X₁+X₂+...+Xn))/(N) | |
| 662779074 | midrange | midextreme which is found by taking the average of the maximum and minimum values of the data set | |
| 662779075 | trimmed mean | a mean found by taking out the maximum and minimum extreme values and then finding the average of the rest of the data values | |
| 662779076 | weighted mean | refers to calculating a mean when some of the data values are counted frequently (mostly used with a frequency table) | |
| 662779077 | frequency | the number of times a data value shows up | |
| 662779078 | percentile | a statistic that identifies the percentage of the data that is less than the given value | |
| 662779079 | lower quartile | the number that divides the data into the lower fourth of the data values in a set of ordered data | |
| 662779080 | upper quartile | the number that divides the data into the upper fourth of the data values in a set of ordered data | |
| 662779081 | Range | The maximum value in a data set minus the minimum value. | |
| 662779082 | Interquartile Range (IQR) | The upper quartile in a data set minus the lower quartile. | |
| 662779083 | Deviation | The difference of the mean of a data set subtracted from the actual data value. | |
| 662779084 | Standard Deviation | A measure of the "typical" distance of all the data points in a set from the mean. | |
| 662779085 | Population Standard Deviation | The square root of the result of dividing the sum of the squared deviations by the population size. | |
| 662779086 | Sample Standard Deviation | The square root of the result of dividing the sum of the squared deviations by one less than the sample size | |
| 662779087 | Variance | The square of the standard deviation The maximum value in a data set minus the minimum value. |
