Reviews terms related to one and two variable statistics.
Terms : Hide Images
| 48812548 | sample | subset of a population | |
| 48812549 | population | every individual | |
| 48812550 | random | each individual has equal probability of being selected | |
| 48812551 | stratified | proportional to the size of a demographic in a population | |
| 48812552 | voluntary | contains only those individuals that choose to participate | |
| 48812553 | cluster | small groups selected randomly by geography | |
| 48812554 | convenience | includes those that are easiest to collect data from | |
| 48812555 | systematic | uses a rule or pattern to select an individual | |
| 48812556 | destructive | destroys the individual in order to collect the data | |
| 48812557 | bias | systematic problem in the experiment that over or under measures | |
| 48812558 | validity | experimental results are reproducible by others | |
| 48812559 | reliable | conclusions can be used to make credible predictions | |
| 48812560 | primary | source of data collected first hand | |
| 48812561 | secondary | source of data collected by someone else | |
| 48812562 | categorical | data collected by a description rather than numerically | |
| 48812563 | continuous | measured data | |
| 48812564 | discrete | counted data | |
| 48812565 | histogram | graphical depiction of continuous data | |
| 48812566 | bar graph | graphical depiction of discrete data | |
| 48812567 | normal | data where measures of central tendency are equal or sufficiently close | |
| 48812568 | skew | the mean is pulled away from the other measures | |
| 48812569 | outlier | an anomalous datum that is separated from or doesn't match the pattern of the rest of the data set | |
| 48812570 | mean | average of a data set | |
| 48812571 | median | middle value of a sorted data set | |
| 48812572 | mode | most frequent value of a data set | |
| 48812573 | range | the minimum value subtracted from the maximum value | |
| 48812574 | variance | average area of squares defined by each piece of data to the mean of the data set | |
| 48812575 | standard deviation | square root of the variance | |
| 48812576 | inter-quartile range | the first quartile subtracted from the third quartile | |
| 48812577 | quartile | divides the data set into four groups | |
| 48812578 | box and whisker | graphical depiction of quartiles | |
| 48812579 | bimodal | has two modes outside of the mean and median | |
| 48812580 | accuracy | how close the data is to the right answer | |
| 48812581 | precision | how close the data is to each other | |
| 48812582 | inferential | extrapolates to the entire population | |
| 48812583 | descriptive | used to describe a data set | |
| 48812584 | quantitative | numerical measures | |
| 48812585 | qualitative | sensual observations | |
| 238436698 | variable | an attribute that measured or counted | |
| 239663034 | coefficient of determination | r^2 value that measures how certain one can be in making predictions from a line or curve of best fit between 0 and 1 | |
| 239663035 | linear regression | an algorithm to find the equation of line of fit for a set of data | |
| 239663036 | correlation coefficient | the PPMC for a data set that indicates the strength and direction of the linear relationship between -1 and 1 | |
| 239663037 | PPMC | Pearson Product Moment of Correlation also known as the correlation coefficient or r-value | |
| 239663038 | cause and effect | a relationship in which change in the independent variable causes change the dependent variable | |
| 239814459 | influential point | an extreme data point that affects the slope of the line of best fit and increases the coefficient of determination | |
| 239814460 | percentile | breaks a data set into 100 equal parts and is used to rank data | |
| 239814461 | weighted mean | an average calculation where each piece of data has a component factor used to amplify or diminish it | |
| 239814462 | index | an actual, relative, or subjective value that is tracked over time | |
| 239814463 | real value | used to compare the value of investments after inflation has been discounted | |
| 239814464 | sample bias | occurs when the participant group does not reflect the population that is being studied or a sample is too small | |
| 239814465 | non-response bias | occurs when subgroups are under-represented because of low participation rates | |
| 239814466 | measurement bias | occurs when the device used for the experiment is not calibrated accurately | |
| 239814467 | response bias | occurs when participates purposely provide false or misleading answers |
