Intro to Data Science

What is not part of the data flow in supporting decision making?

• Data Question

• Data Preparation

• Data Decision

• Business Analysis

What is the most basic need of data science?

• Move/Store

• Explore/ Transform

• Collect

• Learn/Optimise

Which of the following are Continuous Quantitative Data?

• Observations & Errors

• Observations & Time

• Time & Height

• Time & Errors

What is the main rule for data analysis?

• Collect data

• Present the graph

• Plot the data

• Choose the right chart

Which of the following is true?

• Means are correct!

• Means are lies!

• Means with confidence intervals are lies!

• Means with confidence intervals are incorrect!

Which of the following is false?

• Surveys and Focus groups are primary data collection methods.

• Financial Reports and Internets are secondary data collection methods.

• Always stick to 1 collection method.

• Combination of tools is the best way for getting valid and confirmed data.

Why do we need to prepare data?

• Data might be invalid.

• Data might need to be transformed.

• Data might have outliers.

• All of the above.

Which are the 2 approaches of Data Analysis?

• Historical Data & Experimentation

• Historical Data & Graphical Data Analysis

• Experimentation & Regression Analysis

• Experimentation & Hypothesis Testing

Which is not a tool for Graphical Data Analysis?

• Bar Chart

• Box Plot

• Linear Regression

• Scatter Plot

Which is not a tool for Statistical Data Analysis?

• ANOVA

• Logistic Regression

• Linear & Non-linear Regression

• Histogram