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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