B&B Chap. 12 & Lecture Flashcards
Terms : Hide Images [1]
| 4470394310 | Inferential statistics | Allow us to draw inferences about a population based on data from a sample. | 0 | |
| 4470401339 | Test of Difference | Are differences between categories statistically significant? i.e. is there a strong statistical probability that differences in the sample reflect differences population? | 1 | |
| 4470407853 | Standard error | In the case of a percentage, the quantity where p is a percentage, q equals (1-p), and n is the sample size. | 2 | |
| 4470412241 | Nonsampling errors | Those imperfections of data quality that are a result of factors other than sampling error. | 3 | |
| 4470416839 | Tests of statistical significance | A class of statistical computations that indicate the likelihood that the relationship observed between variables in a sample can be attributed to sampling error only. | 4 | |
| 4470422060 | Statistical significance | A general term referring to the unlikeliness that relationships observed in a sample could be attributed to sampling error alone. | 5 | |
| 4470426664 | Level of significance | In the context of tests of statistical significance, the degree of likelihood that an observed, empirical relationship could be attributable to sampling error. | 6 | |
| 4470428306 | Type I error | Rejected a true null hypothesis. | 7 | |
| 4470430025 | Type II error | Accepted a false null hypothesis. | 8 | |
| 4470434591 | Statistical power | Refers to the likelihood of rejecting the null hypothesis when it is false. | 9 | |
| 4470435904 | Chi square | Is a frequently used non-parametric test of significance to identify differences in frequency data. | 10 | |
| 4470439231 | T-test | Is used when we wish to determine whether two groups, representing nominal-level attributes of an independent variable, differ on some dependent variable, measured at the interval or ratio level of measurement. | 11 | |
| 4470446233 | Pearson product-moment correlation coefficient | (r) Is one of the most frequently used parametric statistics in communication research. | 12 | |
| 4470450113 | Scattergrams | A plot of how each data point is measured with respect to two variables. | 13 | |
| 4470450832 | Coefficient of determination | The square of a correlation coefficient r^2. | 14 | |
| 4470457170 | Parametric statistics | The family of inferential statistics appropriate for interval-or ratio-level data, so long as other assumptions can be met. | 15 | |
| 4470460888 | Nonparametric statistics | The family of inferential statistics appropriate for nominal-or ordinal-level data, or for data that cannot otherwise meet the assumptions of parametric statistics. | 16 |