Exam 3: Numerical Descriptive Measures

According to Chebyshev's theorem,the minimum percentage of values that fall within 1.5 standard deviations of the mean is:

Use the following to answer questions : Data concerning the time between failures (in hours of operation)for a computer printer have been recorded,and the first quartile equals 38 hours,the second quartile equals 59 hours,and the third quartile equals 87 hours. -The value for the upper inner fence equals

Use the following to answer questions : The following data represent the ages of 15 people buying lift tickets at a ski area. 15 25 26 17 38 16 74 41 30 24 28 40 20 34 31 -What is the variance of these data,rounded to two decimal places?

The value of the standard deviation of a data set is:

Use the following to answer questions : The waiting times (in minutes)for 11 customers at a supermarket are: 14 9 15 4 4 7 9 11 14 2 6 -The third quartile for these data is:

Use the following to answer questions : The points scored by a team in five basketball games are as follows: 118 124 77 99 112 -The mean for this data set is:

Use the following to answer questions : The temperatures (in degrees Fahrenheit)observed during seven days of summer in Los Angeles are: 78 99 68 91 105 75 85 -The standard deviation,rounded to three decimals,of these temperatures is:

Use the following to answer questions : The work experiences (in years)of 14 employees of a company are 8 21 11 4 14 17 11 8 8 7 2 11 27 6 -The percentile rank for the employee with 17 years of experience is:

Use the following to answer questions : The following table gives the frequency distribution of prices for a sample of 30 college textbooks. -The value of is:

Use the following to answer questions : The temperatures (in degrees Fahrenheit)observed during seven days of summer in Los Angeles are: 78 99 68 91 105 75 85 -The range of these temperatures is:

Use the following to answer questions : The following table gives the frequency distribution of prices for a sample of 30 college textbooks. -The mean price of these textbooks,rounded to two decimal places,is:

Use the following to answer questions : The following table gives the frequency distribution of prices for a sample of 30 college textbooks. -The value of is: