# PSYCHOLOGY 245-The number that occurs most frequently

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## PSYCHOLOGY 245-The number that occurs most frequently

Answer each of the following questions (multiple-choice or short-answer) according to the question prompt.The number that occurs most frequently in a data set ismeanmedianmodeharmonicWhat type of graphic presents data in terms of frequencies per category?Pie chartLine graphBimodal distributionHistogramWhen you are dealing with a normal distribution of scores, which measure of central tendency is preferred?MeanMedianModeAll of the above, as they will be the same in this distributionThe _______ is a single number that represents the total amount of variability in a distribution.standard deviationvariancerangemeanCorrelation coefficients representThe degree of relationship between two variablescausality between two relationshipswhether the independent variable had an effectall of the aboveWhich of the following would probably be negatively correlated?The number of days in class and exam gradeThe height and weight of college studentsThe number of difficult classes taken and semester GPAOverall college GPA and graduate school GPAA perfect positive correlation occurs whenan increase of 1 unit is always accompanied by a proportional increase in the other variablethere is no relationship between the two variablesan increase of 1 unit is always accompanied by a lesser increase in the other variablean increase of 1 unit is always accompanied by a greater increase in the other variableYou are reading an article that says age and number of sick days taken per year has a correlation of -0.72. How would you interpret this correlation?A weak, positive correlationA weak, negative correlationA strong, negative correlationA strong, positive correlationIf a data set has the following data points?5,6,7,6,7?you would expect the standard deviation to bea small number, because the numbers do not vary much from the mean of 6.2a large number, because the numbers do not vary much from the mean of 6.2a large number, because the numbers vary a great deal from the mean of 6.2a small number, because the numbers vary a great deal from the mean of 6.2Descriptive statistics areprocedures using the experimental methodprocedures used to analyze data after an experimentprocedures used to summarize a set of dataall of the aboveThe standard deviation is the square root of thevariancemeanrangesum of the raw scoresDefine nominal data, and provide an example.Define ordinal data, and provide an example.Define interval data, and provide an example.Define ratio data, and provide an example.If you are dealing with percentages that total 100%, the best graph to represent your data is abar graphpie charthistogramfrequency polygonIf you want to know which score in a data set occurred the most often, you would use ameanmedianrangemodeWhich measure of central tendency is less accurate if there are a few extremely large or extremely small numbers in the data set?MedianModeMeanRangeGraphical representations of data setsallow an easy way to represent large sets of numbersare less confusing than several numbers in a descriptive paragraphallow a point to be easily understoodall of the aboveWhich type of graph is frequency used to depict experimental results?Pie chartHistogramFrequency polygonLine graph

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