BANA Exam 1

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both a bar chart and a pie chart

Fifteen percent of the students in a school of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting. The graphical device(s) which can be used to present these data is (are)

categorical data

A researcher is gathering data from four geographical areas designated: South = 1; North = 2; East = 3; West = 4. The designated geographical regions represent

number of items in several classes

A frequency distribution is a tabular summary of data showing the

a scatter diagram

A graphical presentation of the relationship between two variables is

100

The sum of the percent frequencies for all classes will always equal

crosstabulation

A tabular method that can be used to summarize the data on two variables simultaneously is called

0.75

Exhibit 2-1The numbers of hours worked (per week) by 400 statistics students are shown below.

Number of hours Frequency
0 - 9 20
10 - 19 80
20 - 29 200
30 - 39 100

Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20 - 29

longer tail to the left

A histogram is said to be skewed to the left if it has a

100

Exhibit 2-1The numbers of hours worked (per week) by 400 statistics students are shown below.

Number of hours Frequency
0 - 9 20
10 - 19 80
20 - 29 200
30 - 39 100

Refer to Exhibit 2-1. The number of students working 19 hours or less is

the number of elements in a data set

The sum of frequencies for all classes will always equal

less than or equal to this value

The pth percentile is a value such that at least p percent of the observations are

third quartile

The 75th percentile is referred to as the

the mean

In a five number summary, which of the following is not used for data summarization?

1st quartile
median
mean
largest value

7

Exhibit 3-6The closing stock price of MNM Corporation for the last 7 trading days is shown below.

Day Stock Price
1 84
2 87
3 84
4 88
5 85
6 90
7 91

Refer to Exhibit 3-6. The range is

x with bar on top

Which of the following symbols represents the mean of the sample?

5

Exhibit 3-2A researcher has collected the following sample data

4 5 5 5 6
6 7 8 12 12

Refer to Exhibit 3-2. The mode is

the difference between the third quartile and the first quartile

The interquartile range is

greater than the median

When data are positively skewed, the mean will usually be

sample statistic

A numerical value used as a summary measure for a sample, such as sample mean, is known as a

6

Exhibit 3-2A researcher has collected the following sample data

4 5 5 5 6
6 7 8 12 12

the median is:

Example: