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WorksheetsSL-Section 1.1
Total questions: 15
Worksheet time: 8mins
What is descriptive statistics?
Describe Data using Plots and Tables
Application of Methods of Descriptive Statistics
Compute summary statistics on complex data
Sample from a population
What is "Data Visualization"?
Analyse the raw data
Visually inspect the samples
Create tables to compare samples
Create meaningfull plots and other figures
Which term does NOT fit the others?
population
samples
sample set
data
What describes "population" in terms of statistics?
Samples in a dataset
"infinite" source of data to sample from
Visualized samples in a plot
computed summary of complex data
Why should we use more samples?
Better approximate the population
We can create more plots
Be able to compute better estimates
quality of analysis raises
What are "attributes" (or "features") in statistics?
things we want to have data of
table of data
sample set
population
Numerical values are ... data.
qualitative
quantitative
Mark all correct statements
Reals are discrete data
Integers are discrete data
Reals are continuous data
Integers are continuous data
Mark all examples of discrete quantitative data.
House numbers
Amount of rain yesterday
Covid-19 infections
shoe size
Qualitative data are ... values.
non-numerical
numerical
Which are subtypes of qualitative data?
discrete
continuous
ordinal
nominal
Mark all examples of qualitative data.
name of a person
gender of a person
country
Velocity of a car
What means "ordinal data"?
The categories have an order.
One cannot order the categories.
What characterizes nominal data?
Nominal data are always Integers.
There is always an ordering on the categories.
One cannot give an ordering on the categories.
Nominal data are expressed in real numbers.
To which categories belongs the shoe size?
qualitative, ordinal data
qualitative, nominal data
quantitative, discrete data
quantitative, continuous data
