PYB110 Lecture Notes - Lecture 1: Unimodality, Kurtosis
1 Aug 2018
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Information is summarised: communicates about the variable. Inferential: used to draw conclusions about regularities in data, relate one variable onto something else, e. g. height related to how high you jump. Variables: something that can vary or take different values. In psychology: often use scores on particular tests as variables. Value: a possible number, or category (that a score can have) Score: parti(cid:272)ular perso(cid:374)(cid:859)s (cid:448)alue o(cid:374) a (cid:448)aria(cid:271)le. There are two types of numeric variables: magnitude, equality of intervals. Categorical / nominal: variables in name only (e. g. 1= male, 2= female) Shows how frequently each value of a variable occurs. Shows frequency of all values in each interval. Useful when there are too many values. Way of graphing the information in a frequency table (using bars histogra(cid:373)= type of (cid:271)ar graph) Height of each bar is frequency of each interval in table. Way of graphing the information in a frequency table (using lines)
