AP Statistics (Chapter 1) Flashcards
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| 10408529848 | Variables | Characteristic of an individual | 0 | |
| 10408529849 | Categorical Variable | Places individual into a category | 1 | |
| 10408529850 | Quantitative Variable | Takes numerical values for which it makes sense to find an average | 2 | |
| 10408529851 | Frequency Table | Table of counts | 3 | |
| 10408529852 | Relative Frequency Table | Displays percents | 4 | |
| 10408529853 | Bar Graph | - Label axes - Title graph - Scale axes appropriately - Each bar should correspond to the appropriate count - Leave room between bars | 5 | |
| 10408529854 | Pie Chart | - Include all the categories that make up the whole - Counts will be percentages | 6 | |
| 10408529855 | Shape | Symmetric, skewed | 7 | |
| 10408529856 | Measures of Center | Mean, Median | 8 | |
| 10408529857 | Mean | - Most common measure of center - Arithmetic average | 9 | |
| 10408529858 | Median | - Midpoint of a distribution | 10 | |
| 10408529859 | Spread | Range, IQR | 11 | |
| 10408529860 | IQR | The middle 50% | 12 | |
| 10408529861 | IQR Equation | Q3 - Q1 | 13 | |
| 10408529862 | Outlier Equation | Less than Q1 - 1.5IQR Higher than Q3 + 1.5IQR | 14 | |
| 10408529863 | Dotplot | - Only need to properly label horizontal axis - Title - Each dot represents a count of 1 - Works well with a small data set | 15 | |
| 10408529864 | Stemplot | - Separate each piece of data into a "stem" and a "lead" - Write the stems vertically in increasing order from top to bottom - Write the leaves in increasing order out from the stem - Be very neat and leave the same amount of space between leaves - Title the graph - Include a key identifying what the stem and leaves represent - Works well with a small data set | 16 | |
| 10408529865 | Histogram | - Most common graph of a quantitative variable - The x-axis is continuous, no gaps between bars - Title the graph - Divide the range of data into classes of equal width - Label and scale the axes | 17 | |
| 10408529866 | Five-Number Summary | Minimum, Q1, Median, Q3, Maximum | 18 | |
| 10408529867 | Boxplot | - Drawn from Q1 to Q3 - Line in the middle marks the median - Lines extend from the box to the smallest and largest observations that aren't outliers | 19 | |
| 10408529868 | Standard Deviation | - Find the distance of each observation from the mean - Square each of these distances - Average the distances by dividing their sum by n-1 - Take the square roon | 20 | |
| 10408529869 | Round-off Error | The error from rounding decimals | 21 | |
| 10408529870 | When describing the overall pattern of a distribution, you must address... | - Center - Shape - Spread - Outliers | 22 | |
| 10408529877 | Dotplot |  | 23 | |
| 10408529878 | Histogram |  | 24 | |
| 10408529879 | Bar Graph |  | 25 | |
| 10408529880 | Frequency Table |  | 26 | |
| 10408529881 | Relative Frequency Table |  | 27 | |
| 10408529882 | Symmetric |  | 28 | |
| 10408529883 | Skewed Right |  | 29 | |
| 10408529884 | Skewed Left |  | 30 | |
| 10408529885 | Pie Chart |  | 31 | |
| 10408529886 | Segmented Bar Graph |  | 32 | |
| 10408529887 | Two-Way Table |  | 33 | |
| 10408529888 | Back-to-Back Stemplot |  | 34 | |
| 10408529889 | Boxplot |  | 35 | |
| 10408529871 | Is the mean sensitive to outliers? | The mean is sensitive to outliers. | 36 | |
| 10408529872 | If a distribution is skewed, use this measure of center | Median | 37 | |
| 10408529873 | Is the median sensitive to outliers? | The median is not sensitive to outliers. | 38 | |
| 10408529874 | If a distribution is exactly symmetric, the median and mean will be | Exactly the same | 39 | |
| 10408529875 | If the distribution is skewed left, the mean will | Fall to the left | 40 | |
| 10408529876 | If the distribution is skewed right, the mean will | Fall to the right | 41 |