# Statistics Test 1

 Sampling Error Discrepany that exisits between a smaple statistic and the corresponding populatino paramenter Experiment manipulate a varaiable Correlational Study Measures two different variable to see if there is a relationship between them. Independent variable The varible that is manitpulated  Dependent Variable Is the varable observed to assess the effect of a treatment discrete variable Separate categories. Whole Numbers. continuous variable infinite number of possible values Nominal Scales Consists of a set of categories that have different names. Ordinal Scale Consists of a set of categories that are organized in an ordered sequence.  Interval Scale Consists of categories with exactly the same size intervals. Zero is abritary. Ratio Scale Same as interval but zero is the bottom. Positive Skew Where the majority of the Data is on the left Negative Skew where the majority of the Data is on the right Sample sert of individuals selected from a apopulation, ussally to represent the population. Cardinality # of objects in a set Formula for Z- Score and what the variable stand for. Z= [X - (MUE)]/(sigma) X = value given or reequest to findMUE = AverageSigma = Standard diviation Statistic is a value that describes a sample parameter  is a value that describes a population The central tendency of a set of measurements is a  single score that represents the center of the distribution. What does variablity measure? How far values tend to be from the central tendency. Authornharris1 ID175449 Card SetStatistics Test 1 DescriptionStatistics Test 1 Updated2012-10-04T15:07:14Z Show Answers