Basics of Data Science

Which of the following is one of the key data science skills?

• Statistics

• Machine Learning

• Data Visualization

• All of the mentioned

The process of evaluating data through analytical and statistical tools.

• Data Mining

• Data Exploration

• Data Analysis

• Data Visualization

Choose the correct keyword for this definition: A collection of information about a

related topic

• Trend

• Spike

• Dataset

• None

Which of the following step is performed by data scientist AFTER acquiring the

data?

• Data Integration

• Data Replication

• Data Cleansing

• None

A graphical representation of a data set is referred to as a ______

• Visualization

• Data Set

• Investigative Cycle

• None

To find the ________ you put all numbers in order from least to greatest and find the

number that is in the middle

• Median

• Mode

• Mean

• Range

What is the mean of test scores?{70, 70, 80, 85, 85, 90, 95, 95, 100, 100}

• 85, 95, and 100

• 30

• 87

• 36

Total groups in which data can be characterized is?

• 1

• 2

• 3

• 4

There are __ levels of data

• 2

• 3

• 4

• 5

__ level of data is described by name

• Nominal

• ordinal

• interval

• ratio