2) The National Weather Center reported that the following number of tropical st

Question

2) The National Weather Center reported that the following number of tropical storms and hurricanes reached the U. S. Coast during the 11 year period from 1984-1994: 12 11 6 7 12 11 14 8 7 8 7
Compute the following: Sample mean Mode Sample Variance Sample standard deviation Range
Please show all work. Thank You. 2) The National Weather Center reported that the following number of tropical storms and hurricanes reached the U. S. Coast during the 11 year period from 1984-1994: 12 11 6 7 12 11 14 8 7 8 7
Compute the following: Sample mean Mode Sample Variance Sample standard deviation Range
Please show all work. Thank You. 12 11 6 7 12 11 14 8 7 8 7
Compute the following: Sample mean Mode Sample Variance Sample standard deviation Range
Please show all work. Thank You.

Explanation / Answer

Mean = sum of observations / number of observations

= 12 + 11 + 6 +7 + 12 + 11 + 14 + 8 + 7 + 8 +7 / 11

= 103 / 11

= 9.3636

Mode = value occuring the most time = 7

Range = Highest value - lowest value

= 14 - 6

= 8

Sample variance

= summation of [ ( x - mean)2 / n-1 ]

Stdev = sqrt ( variance)

= sqrt ( 7.2545)

= 2.6934

Hope this helps.

Data 12 6.9504 11 2.6777 6 11.3140 7 5.5868 12 6.9504 11 2.6777 14 21.4959 8 1.8595 7 5.5868 8 1.8595 7 5.5868 Variance 7.2545

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