Ch.1- The Role of Statistics and the Data Analysis Process.
An Introduction to Statistics and Data Analysis
Terms : Hide Images
| 5969539541 | Histogram | A graph of vertical bars in intervals representing the frequency distribution of a set of data. |  | 0 |
| 5969539542 | Statistics | The scientific discipline that provides methods to help us make sense of data. |  | 1 |
| 5969539543 | Variability | In a set of numbers, how widely dispersed the values are from each other and from the mean |  | 2 |
| 5969539544 | Descriptive Statistics | Methods of organizing and summarizing data; usually aided by tables, graph and various other numerical summaries. |  | 3 |
| 5969539545 | Population | The entire collection of individuals or objects about which information is desired. |  | 4 |
| 5969539546 | Sample | A subset of the population that is selected for a study in some manner. |  | 5 |
| 5969539547 | Inferential Statistics | The branch of statistics that involves generalizing from a sample to the population from which it was selected and assessing the reliability of such generalizations. |  | 6 |
| 5969539548 | Data | Result from making observations either on a single variable or simultaneously on two or more variables. |  | 7 |
| 5969539549 | Variable | Any characteristic whose value may change from one individual or object to another. |  | 8 |
| 5969539550 | Univariate data set | A data set consisting of observations on a single variable. |  | 9 |
| 5969539551 | Categorical data set | A data set that has categorical responses; also known as a qualitative data set. |  | 10 |
| 5969539552 | Numerical data set | A data set with numerical responses and is also known as a quantative data set. |  | 11 |
| 5969539553 | Bivariate data set | A data set consisting of simultaneous observations from two different variables. |  | 12 |
| 5969539554 | Multivariate data | More than two variables are measured on a single experimental unit. |  | 13 |
| 5969539555 | Discrete Data | When the number of possible values is either a finite number or a "countable" number. (That is, the number of possible values is 0 or 1 or 2 and so on.) |  | 14 |
| 5969539556 | Continuous Data | Numerical data values that by result from infinitely many possible values along a number line without gaps, interruptions or jumps. |  | 15 |
| 5969539557 | Frequency | The number of observations in a given statistical category. |  | 16 |
| 5969539558 | Relative Frequency Distribution | A frequency that is present for categorical data(qualitative) and is the proportion or fraction of the observations resulting in the category. Calculated by taking frequency divided by the number of observations in the data set. |  | 17 |
| 5969539559 | Bar Chart | Qualitative data display; each category is represented by rectangle that is proportional to the corresponding frequency. |  | 18 |
| 5969539560 | Dot Plot | A picture of numerical data in which observation is represented by a dot on or above a horizontal measurement scale. |  | 19 |
| 5969539561 | Outliers | Extreme high or low scores in a distribution |  | 20 |
| 5969800892 | Quantitative Data | Data that can be measured numerically (added, subtracted, averaged, etc); may be discrete or continuous |  | 21 |
| 5969815367 | Qualitative Data | Descriptive data that can only be counted but not measured numerically; always discrete |  | 22 |
