Dsci 100 Prep Exam Questions With Complete Verified Answers.
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Course
DSCI
Institution
DSCI
Descriptive analysis - correct answer Summarizing characteristics of a data set, no interpretation
Exploratory analysis - correct answer Looking for trends, patterns, or relationships in data, often used for future hypothe...
Dsci 100
Descriptive analysis - correct answer Summarizing characteristics of a data set, no
interpretation
Exploratory analysis - correct answer Looking for trends, patterns, or relationships
in data, often used for future hypothesis formulation
Predictive analysis - correct answer Predicting labels for unlabelled data points
Inferential analysis - correct answer Looking for trends, patterns, or relationships in
data and asks for quantification about how applicable these are to a wider population
Causal analysis - correct answer Determining if changing 1 factor will lead to a
change in another factor
Mechanistic analysis - correct answer Asking about the underlying
mechanism/reason of observed trends, patterns, or relationships
Data set - correct answer A structured collection of numbers and characters
Data frame - correct answer Similar to a spreadsheet
Rows - correct answer Observations
Columns - correct answer Variables
Arguments - correct answer Instructions for R to carry out a function
, Relative path - correct answer Where the file is with respect to your current
location on your computer, preferred since absolute path may be different for every computer
Absolute path - correct answer Where the file is with respect to the computer's file
system base
URL - correct answer Uniform resource locator
Variable - correct answer A characteristic, number, or quantity that can be
measured
Observation - correct answer All measurements for a given entity
Value - correct answer A single measurement for a single variable
Vector - correct answer Object that contains 1 or more elements of the same data
type (more common)
List - correct answer Object that contains multiple, ordered elements, but can be
different data types
Character (chr) - correct answer Letters or numbers surrounded by quotation marks
Integer (int) - correct answer Numbers that do not contain decimals
Logical (lgl) - correct answer True or false
Factor (fct) - correct answer Represents data with limited number of values
(categories)
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