Statistics Review MGF 1106 Fall 2011

Determine the following for the data listed above: Mean Mode Range Median Midrange a)25.5, 25, 51, 25, 26 b)26, 51, 25.5, 25, 11 c)26, 25, 11, 25, 25.5 d)26, 11, 25, 25, 25.5

What is the standard deviation for the data above? a)26 b)4.24 c)18 d)3.96

Use the set of data to construct a frequency of distribution; let the first class be ClassFreq ClassFreq ClassFreq ClassFreq A.B.C.D.

Use the set of data to construct a histogram of the frequency of distribution. A.B.C.

Use the set of data to construct a frequency polygon of the frequency of distribution. A.B.C.

What is the most common score? a)81 b)83 c)80 d)95 Mean81First Quartile60 Median83Third Quartile89 Mode8090 th Percentile95 Standard Deviation9 The following data represents Algebra II test scores.

What score did half of the students exceed? a)81 b)83 c)80 d)95 Mean81First Quartile60 Median83Third Quartile89 Mode8090 th Percentile95 Standard Deviation9 The following data represents Algebra II test scores.

About what percent of students’ grades exceeded 89? a)25 b)50 c)75 d)100 Mean81First Quartile60 Median83Third Quartile89 Mode8090 th Percentile95 Standard Deviation9 The following data represents Algebra II test scores.

About what percent of students’ grades were less than 95? a)5 b)90 c)60 d)95 Mean81First Quartile60 Median83Third Quartile89 Mode8090 th Percentile95 Standard Deviation9 The following data represents Algebra II test scores.

If there are 100 students enrolled in Algebra II, what would be the total of all the scores? a)81 b)8300 c)8100 d)8000 Mean81First Quartile60 Median83Third Quartile89 Mode8090 th Percentile95 Standard Deviation9 The following data represents Algebra II test scores.

What test score represents one standard deviation above the mean? a)81 b)90 c)9 d)72 Mean81First Quartile60 Median83Third Quartile89 Mode8090 th Percentile95 Standard Deviation9 The following data represents Algebra II test scores.

What test score represents 1.5 standard deviations below the mean? a)81 b)90 c)67.5 d)72.5 Mean81First Quartile60 Median83Third Quartile89 Mode8090 th Percentile95 Standard Deviation9 The following data represents Algebra II test scores.

What percent of cups of coffee sold were between $1.75 and $2.15? a)16% b)78% c)61% d)95%

What percent of cups of coffee were sold for greater than $1.50? a)98% b)2% c)20% d)47%

What percent of cups of coffee were sold for greater than $2.00? a)55% b)1% c)45% d)3%

What percent of cups of coffee were sold for less than $2.00? a)84% b)10% c)16% d)90%