Calculate the variance and standard deviation for Matt’s quiz scores.

Business Statistics Assignment (Total 40 Points)

 

Question 1: (10 Points)

 

Find the mean, median and mode of the following:

 

Presto Printing Company sales for the month of February.

(NOTE: The company is closed on Sundays.)

 

February 2: $4,694

February 3: $5,964

February 4: $3,309

February 5: $3,106

February 6: $7,124

February 7: $2,149

February 9: $3,123

February 10: $4,128

 

February 11: $3,198

February 12: $2,198

February 13: $6,287

February 14: $1,123

February 16: $4,598

February 17: $3,987

February 18: $3,009

February 19: $3,098

 

February 20: $5,980

February 21: $3,209

February 23: $6,541

February 24: $3,098

February 25: $4,598

February 26: $4,873

February 27: $9,876

February 28: $5,878

 

 

Question 2: (20 Points)

 

  1. a) Set up a frequency distribution table and calculate the relative frequency for the following quiz scores that Matt achieved in his Algebra course:

Matt’s Quiz Scores: 85, 88, 92, 71, 100, 78, 61, 60, 89, 99, 100, 65, 98, 85, 92, 79, 81, 85, 100, and 100.

Use the following frequency intervals:

60 – 70

70 – 80

80 – 90

90 – 100

 

  1. b) Calculate the variance and standard deviation for Matt’s quiz scores.

    Suggestion: set the problem up in steps within a table like the textbook illustrates.

 

Question 3: (10 Points)

Patrick’s Average Sales:

 

Monday $4,099

Tuesday $6,700

Wednesday $0

Thursday $10,000

Friday $9,007

Saturday $9,776

Sunday $0

 

Is it better for Patrick to earn 7.5% based on his average daily sales or a flat $4,000 for the week?  In your explanation, please show your calculations.

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