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Chapter 3: Q.3.73. (page 93)

Determine the age and sample standard deviation for each of the due sets. For the sample standard deviation round each answer to one more decimal place than that used for the observation.

Tornado Touchdowns. Each year, tornadoes that touch down are recorded by the Storm Prediction Center and published in Months Tomade Statistics. The following table gives the number of tornadoes that touched down in the United States during each month of one year [SOURCE: National Oceanic and Atmospheric Administration

Short Answer

Expert verified

Range of the data=202tanadoes

Standard deviation of the data

Step by step solution

01

Step 1. Given information.  

We have given data ;

01

Step 1. Given information. 

We have given data ;3,2,47,118,204,97,68,86,62,57,98,99

02

Step 2. To find range of the data.

Range=Max.value-Min.value=204-2=202tamadoes

03

Step 3. To find mean of the data.

Mean=SumoftheobservationNumberofobservation=(2+3+47+118+204+97+68+86+62+57+98+99)12=94112=78.41667=78.4

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