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10170732803 | Statistics | A set of tools and techniques that is used for describing, organizing, and interpreting information or data | 0 | |
10170732804 | Example of statistics | Number of students in a particular curriculum, or average cost of dinner | 1 | |
10170732805 | Purpose of statistics | Evaluating research questions and providing evidence for or against. | 2 | |
10170732806 | Data | A record of an observation or an event such as a test score, grade in a class, or response time, one! | 3 | |
10170732807 | Data Set | A collection of observations or events such as test scores, grades on a test, or response times | 4 | |
10170732808 | Descriptive statistics | Used to organize and describe the characteristics of a collection of data; measures of average and measures of variability | 5 | |
10170732809 | Inferential statistics | Used to make generalizations from a smaller group of subjects (a sample to a larger group of subjects (a population); won't have access to the entire population | 6 | |
10170732810 | Population | A group of people that have at least one characteristic in common (All Aggies) | 7 | |
10170732811 | Sample | A subset of a population (Certain subset of Aggies) | 8 | |
10170732814 | Variables | A characteristic (of a person, place, or thing) that takes on different values (Achievement, attitude, knowledge, etc) | 9 | |
10170732816 | Numerical Data | Represent differing amounts of the characteristic (Age, intelligence, or run time, etc.) | 10 | |
10170732817 | Categorical Data | Represent differing kinds rather than amounts (Gender, marital status, or breed of dog, etc.) | 11 | |
10170732818 | Continuous Variables | Variables that can take on any value (number of free throws made, GRE score, or number of students in class) | 12 | |
10170732819 | Discrete Variables | Variables that can take of a finite number of values (marital status, gender, or a year in school) | 13 | |
10170732824 | Nominal Scale | (Names) Values merely name the category to which the object under study belongs, interpretations are limited to statements of kind rather than amount (Italian, Irish...) | 14 | |
10170732825 | Ordinal Scale | Outcomes can be ordered or ranked to reflect differing degrees or amounts of the characteristic being studied (first vs. second vs. third) Does not give info about the difference between first and second, second and third | 15 | |
10170732830 | Symbol - ∑ | Symbol - "Sum of" | 16 | |
10170732832 | Symbol - N | Symbol - Number of people in a population | 17 | |
10170732833 | Symbol - n | Symbol - Number of people in a sample | 18 | |
10170732840 | Symbol - IQR | Symbol - Measures of Variability - Interquartile Range | 19 | |
10170732850 | Dependent variable | In an experiment, a measure expected to vary across different levels of independent variable | 20 | |
10170732851 | Double-Blind experiment | An experiment where the participants are kept unaware of the experimenter's hypothesis, and the experimenter is kept unaware of the participants' group affiliation (experimental or placebo group) until after the dependent variable has been measured | 21 | |
10170732853 | Hypothesis | An educated guess that guides research | 22 | |
10170732854 | Independent Variable | In an experiment, the variable that the experimenter manipulates | 23 | |
10170732864 | Bar graph | graph that is typically used with data based on nominal or ordinal scales | 24 | |
10170732868 | Negatively skewed distribution (skewed left) | Type of distribution | ![]() | 25 |
10170732869 | Positive Skew distribution (Skewed right) | Type of distribution | ![]() | 26 |
10170732875 | Median value | is a set of numbers is the value that divides the set into equal halves | 27 | |
10170732876 | Mode | The most frequent occurring number in a set of scores | 28 | |
10170732879 | Outlier | Deviant scores that have been legitimately gathered and are not due to equipment failures. | 29 | |
10170732888 | range | describes the difference between the lowest score and the highest score in a set of numbers | 30 |