Business Analytics chapter 2

 

A sample of 13 adult males’ heights are listed below.

70, 72, 71, 70, 69, 73, 69, 68, 70, 71, 67, 71, 74

Find the range of the data.

• 7

• 6.5

• 5

• 4

The _____ shows the number of data items with values less than or equal to the upper class limit of each class.

•  

  cumulative frequency distribution

• frequency distribution

• percent frequency distribution

• relative frequency distribution

Compute the 50th percentile for the following data.

10, 15, 17, 21, 25, 12, 16, 11, 13, 22  

• 18.6

• 13.3

• 15.5

• 17.7

Compute the relative frequencies for the data given in the table below:

• 0.31, 0.14, 0.37, 0.18

• 0.37, 0.14, 0.31, 0.18

• 0.16, 0.28, 0.33, 0.13

• 0.18, 0.31, 0.37, 0.14

Compute the mean of the following data:

56, 42, 37, 29, 45, 51, 30, 25, 34, 57

• 42.8

   

• 52.1

• 40.6

• 39.4

Below is a histogram for the number of days that it took Wyche Accounting to perform audits in the last quarter of last year. What is the frequency of the 25-28 bin?

• 0.05

• 1

• 0.5

• 4

Select the histogram that is moderately skewed right.

• A

• B

• C

• D

In a survey of patients in a local hospital, 62.42% of the respondents indicated that the health care providers needed to spend more time with each patient. Who makes up the sample?

• All patients in a local hospital

• All survey respondents

• Hospital patients

• Cannot be determined from the information given

_____ acts as a representative of the population.

• The variable

• The variance

• A sample

• A random variable

Compute the geometric mean for the following data on growth factors of an investment for 10 years.

1.10, 0.50, 0.70, 1.21, 1.25, 1.12, 1.16, 1.11, 1.13, 1.22  

• 1.0148

• 1.0221

• 1.0363

• 1.1475