Statistics

A variable is:

• A fixed value

• A storage location identified by a memory address

• A type of function

• A programming language

What is the difference between qualitative and quantitative variables?

• Qualitative variables are numerical, while quantitative variables are categorical.

• Qualitative variables are categorical, while quantitative variables are numerical.

• Both qualitative and quantitative variables are numerical.

• Both qualitative and quantitative variables are categorical.

Suppose you are an employee of XYZ company where your manager asks you to think about the new version of the main product of your company. Is it the right time to launch the new product in the market?

• Yes, it is the right time to launch.

• No, it is not the right time to launch.

• I need more information to decide.

• The decision depends on market analysis.

What is the primary purpose of acquiring and analyzing data as a decision maker?

• To support decisions

• To create confusion

• To ignore facts

• To entertain others

Fill in the blank: Statistics is the science of collecting, organizing, presenting, analyzing, and interpreting ______ to assist in making more effective decisions.

• data.

• numbers.

• graphs.

• charts.

How many females are in the class?

• 10 females

• 16 females

• 20 females

• 26 females

Fill in the blank: A 'Sample' is a ______ group selected from the population to represent it.

• smaller

• larger

• random

• specific

Which of the following is an example of a numerical variable?

• A) Eye color

• B) Gender

• C) Number of students in a class

• D) Political party affiliation

Eye color is a numerical or categorical variable.

• Numerical

• Categorical

'Annual salary of employees' is a numerical or categorical variable.

• Numerical

• Categorical