INTRODUCTION TO STATISTICS

Identify the data set’s level of measurement:

The nationality of each person on an airplane.

• A. Ordinal

• B. Nominal

• C. Interval

• D. Ratio

Identify the data set’s level of measurement:

The salaries of nurses at a hospital.

• A. Nominal

• B.Ordinal

• C. Interval

• D. Ratio

What is Statistics?

• a) Relevant information

• b) Involves scientific procedures and methods

• c) decision making process

• d) data are generated

Types of Statistics are:

• a) marketing and accounting

• b) descriptive and inferential statistic

• c) primary and secondary

• d) quantitative and qualitative

Example of quantitative data ..

• a) color of eyes

• b) numbers of chairs

• c) types of glasses

• d) marital status

Primary data..

• a) second hand data

• b) first hand information

• c) data from other parties

• d) annual report

Which of the following statements are true?

I. All variable can be classified as quantitative or categorical variables.

II. Categorical variables can be continuous variable.

III. Quantitative variables can be discrete variables.

• i only

• ii only

• iii only

• i and iii

• i and ii

Descriptive statistics

• use data from a sample to answer questions about population.

• allow you to generalize beyond the data at hand.

• summarize and describe data.

What is the best data collection for the study of students' spending on data plan.

• Direct Questionnaire

• Direct Observation

• Face to Face Interview

• Telephone interview

Which is an example of ratio scale?

• soil type

• gender

• amount of water

• all of these