Question

A statistics student found a reference in the campus library that contained the median family income for the Caribbean. She would report her data as being collected using:

a) A designed experiment

b) A random sample

c) A published source

d) Cross sectional analysis

The classification of students by class designation (freshman, sophomore, junior and senior) is an example of:

a) An Ordinal Categorical Variable

b) Continuous Numerical Variable

c) A Discrete Numerical Variable

d) A summary statistic

Which of the following is best suited to analyzing the spread of data:

a) A line graph

b) A box plot

The manager of the customer service division of a major electronics company is interested in determining whether the customers who have purchased CD players made by the company over the past 12 months are satisfied with their products. The population of interest is:

a) All the customers who have bought a CD player made by the company over the past 12 months

b) All the customers who have ever bought a CD player made by the company

c) All the customers who have bought a CD player made by the company and brought it for repairs over the past 12 months

d) All the customers who have used a CD player over the past 12 months

e) All customers

The management of USC would like to ascertain satisfaction levels among its student body. Data is collected via survey on the gender, age, degree program, nationality, monthly income and satisfaction levels (very satisfied, satisfied, somewhat satisfied, disappointed) of 300 students. The 300 students in the study represent the _______ of the study.

a) Census

b) Variables

c) Data

d) Sample

Answer 1

1. A published source.

2. An ordinal categorical variable

3. A box plot is useful for studing spread of data.

4. All the customers who have bought a CD player made by the company over the past 12 months.

5. Sample