Edited, memorised or added to reading list

on 17-Nov-2019 (Sun)

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Flashcard 4594356063500

Question
For PCA/SVD, the scale/*** of the data matters
Answer
For PCA/SVD, the scale/units of the data matters


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Flashcard 4594358160652

Question
For PCA/SVD, the ***/units of the data matters
Answer
For PCA/SVD, the scale/units of the data matters


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Flashcard 4594360257804

Question
PC’s/SV’s may *** real patterns
Answer
PC’s/SV’s may mix real patterns


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Flashcard 4594362354956

Question
SVD can be *** intensive for very large matrices
Answer
SVD can be computationally intensive for very large matrices


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Flashcard 4594364452108

Question
To quote from Hadley Wickham’s book on ggplot2, we want to “shorten the distance from mind to ***”.
Answer
To quote from Hadley Wickham’s book on ggplot2, we want to “shorten the distance from mind to page”.


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Flashcard 4594366549260

Question
”…the grammar tells us that a statistical graphic is a *** from data to aesthetic attributes (colour, shape, size) of geometric objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from ggplot2 book
Answer
”…the grammar tells us that a statistical graphic is a mapping from data to aesthetic attributes (colour, shape, size) of geometric objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from ggplot2 book


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Flashcard 4594369432844

Question
”…the *** tells us that a statistical graphic is a mapping from data to aesthetic attributes (colour, shape, size) of geometric objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from ggplot2 book
Answer
”…the grammar tells us that a statistical graphic is a mapping from data to aesthetic attributes (colour, shape, size) of geometric objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from ggplot2 book


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Flashcard 4594371529996

Question
”…the grammar tells us that a statistical graphic is a mapping from *** to *** attributes (colour, shape, size) of geometric objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from ggplot2 book
Answer
”…the grammar tells us that a statistical graphic is a mapping from data to aesthetic attributes (colour, shape, size) of geometric objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from ggplot2 book


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Flashcard 4594372840716

Question
”…the grammar tells us that a statistical graphic is a mapping from data to aesthetic attributes (colour, shape, size) of *** objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from ggplot2 book
Answer
”…the grammar tells us that a statistical graphic is a mapping from data to aesthetic attributes (colour, shape, size) of geometric objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from ggplot2 book


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Flashcard 4594374413580

Question
”…the grammar tells us that a statistical graphic is a mapping from data to aesthetic attributes (colour, shape, size) of geometric objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from *** book
Answer
”…the grammar tells us that a statistical graphic is a mapping from data to aesthetic attributes (colour, shape, size) of geometric objects (points, lines, bars). The plot may also contain statistical transformations of the data and is drawn on a specific coordinate system” – from ggplot2 book


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Flashcard 4594375986444

Question
The grammar allows for a more compact summary of the base *** of a language
Answer
The grammar allows for a more compact summary of the base components of a language


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Flashcard 4594378083596

Question
in ggplot2 in R, qplot() plots are made up of *** (size, shape, color) and *** (points, lines).
Answer
in ggplot2 in R, qplot() plots are made up of aesthetics (size, shape, color) and geoms (points, lines).


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Flashcard 4594380180748

Question
in ggplot2 in R, qplot() plots are made up of aesthetics (***, ***, ***) and geoms (points, lines).
Answer
in ggplot2 in R, qplot() plots are made up of aesthetics (size, shape, color) and geoms (points, lines).


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Flashcard 4594381753612

Question
in ggplot2 in R, qplot() plots are made up of aesthetics (size, shape, color) and geoms (***, ***).
Answer
in ggplot2 in R, qplot() plots are made up of aesthetics (size, shape, color) and geoms (points, lines).


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Flashcard 4594383326476

Question
***() is very flexible for doing things qplot() cannot do.
Answer
ggplot() is very flexible for doing things qplot() cannot do.


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Flashcard 4594385423628

Question

your data should have appropriate [...] so that you can quickly look at a dataset and know

• what the variables are

• what the values of each variable mean

Answer

your data should have appropriate metadata so that you can quickly look at a dataset and know

• what the variables are

• what the values of each variable mean


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Flashcard 4594387520780

Question

your data should have appropriate metadata so that you can quickly look at a dataset and know

• what the [...] are

• what the [...] of each variable mean

Answer

your data should have appropriate metadata so that you can quickly look at a dataset and know

• what the variables are

• what the values of each variable mean


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Flashcard 4594389093644

Question
in ggplot2 for R, non-numeric or categorical variables should be coded as *** variables and have meaningful labels for each level of the factor.
Answer
in ggplot2 for R, non-numeric or categorical variables should be coded as factor variables and have meaningful labels for each level of the factor.


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Flashcard 4594391190796

Question
in ggplot2 for R, non-numeric or categorical variables should be coded as factor variables and have meaningful *** for each level of the factor.
Answer
in ggplot2 for R, non-numeric or categorical variables should be coded as factor variables and have meaningful labels for each level of the factor.


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Flashcard 4594392501516

Question
in ggplot2 for R, non-numeric or categorical variables should be coded as factor variables and have meaningful labels for each level of the ***.
Answer
in ggplot2 for R, non-numeric or categorical variables should be coded as factor variables and have meaningful labels for each level of the factor.


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Flashcard 4594394074380

Question
for ggplot2 in R, non-numeric or categorical variables should be coded as factor variables and have meaningful labels for each level of the factor. If a variable represents temperature categories, it might be better to use “cold”, “mild”, and “hot” rather than “ [...] ”, “ [...] ”, and “ [...]
Answer
for ggplot2 in R, non-numeric or categorical variables should be coded as factor variables and have meaningful labels for each level of the factor. If a variable represents temperature categories, it might be better to use “cold”, “mild”, and “hot” rather than “1”, “2”, and “3”


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Flashcard 4594396171532

Question
including the proper *** can make your exploratory plots essentially self-documenting
Answer
including the proper metadata can make your exploratory plots essentially self-documenting


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Flashcard 4594398268684

Question
including the proper metadata can make your exploratory plots essentially self-***
Answer
including the proper metadata can make your exploratory plots essentially self-documenting


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Flashcard 4594399841548

Question
for ggplot2 in R, in the call to qplot() you must specify the '***' argument so that qplot() knows where to look up the variables.
Answer
for ggplot2 in R, in the call to qplot() you must specify the 'data' argument so that qplot() knows where to look up the variables.


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Flashcard 4594401938700

Question
in ggplot2 for R, color is an *** and the color of each point can be mapped to a ***.
Answer
in ggplot2 for R, color is an aesthetic and the color of each point can be mapped to a variable.


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Flashcard 4594404035852

Question

in ggplot2 for R, a smooth is a “***” that you can add along with your data points.

qplot(displ, hwy, data = mpg, *** = c("point", "smooth"))

Answer

in ggplot2 for R, a smooth is a “geom” that you can add along with your data points.

qplot(displ, hwy, data = mpg, geom = c("point", "smooth"))


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Flashcard 4594406133004

Question
in ggplot2 for R, specify geom = "***" if you want the smoother overlayed with the points.
Answer
in ggplot2 for R, specify geom = "point" if you want the smoother overlayed with the points.


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Flashcard 4594408230156

Question
a way to create multiple panels of plots based on the levels of categorical variable in ggplot2 for R is ***.
Answer
a way to create multiple panels of plots based on the levels of categorical variable in ggplot2 for R is facets.


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Flashcard 4594410327308

Question

An alternative to histograms is a density smoother, which sometimes can be easier to visualize when there are multiple groups.

Here is a density smooth of an entire study population.

qplot(log(eno), data = maacs, geom = "***")

Answer

An alternative to histograms is a density smoother, which sometimes can be easier to visualize when there are multiple groups.

Here is a density smooth of an entire study population.

qplot(log(eno), data = maacs, geom = "density")


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Flashcard 4594412424460

Question

An alternative to histograms is a density ***, which sometimes can be easier to visualize when there are multiple groups.

Here is a density *** of an entire study population.

qplot(log(eno), data = maacs, geom = "density")

Answer

An alternative to histograms is a density smoother, which sometimes can be easier to visualize when there are multiple groups.

Here is a density smooth of an entire study population.

qplot(log(eno), data = maacs, geom = "density")


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Flashcard 4594413997324

Question
aesthetic mappings: describe how data are mapped to ***, ***, ***, ***
Answer
aesthetic mappings: describe how data are mapped to color, size, shape, location


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Flashcard 4594416094476

Question
these mappings describe how data are mapped to color, size, shape, location : *** mappings
Answer
these mappings describe how data are mapped to color, size, shape, location : aesthetic mappings


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Flashcard 4594417667340

Question
in ggplot2 for R, *** are geometric objects like points, lines, shapes
Answer
in ggplot2 for R, geoms are geometric objects like points, lines, shapes


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Flashcard 4594419764492

Question
in ggplot2 for R, geoms are *** objects like ***, ***, ***
Answer
in ggplot2 for R, geoms are geometric objects like points, lines, shapes


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Flashcard 4594421337356

Question
in ggplot2 for R, *** describe how conditional/panel plots should be constructed
Answer
in ggplot2 for R, facets describe how conditional/panel plots should be constructed


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Flashcard 4594424220940

Question
in ggplot2 for R, facets describe how ***/*** plots should be constructed
Answer
in ggplot2 for R, facets describe how conditional/panel plots should be constructed


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Flashcard 4594425793804

Question
in ggplot2 for R, *** are statistical transformations like binning, quantiles, smoothing.
Answer
in ggplot2 for R, stats are statistical transformations like binning, quantiles, smoothing.


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Flashcard 4594427890956

Question
in ggplot2 for R, stats are *** transformations like ***, ***, ***.
Answer
in ggplot2 for R, stats are statistical transformations like binning, quantiles, smoothing.


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Flashcard 4594429463820

Question
in ggplot2 for R, stats are statistical *** like binning, quantiles, smoothing.
Answer
in ggplot2 for R, stats are statistical transformations like binning, quantiles, smoothing.


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Flashcard 4594431036684

Question
in ggplot2 for R, *** are what scale an aesthetic map uses (example: male = red, female = blue).
Answer
in ggplot2 for R, scales are what scale an aesthetic map uses (example: male = red, female = blue).


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Flashcard 4594433133836

Question
in ggplot2 for R, scales are what *** an aesthetic map uses (example: male = red, female = blue).
Answer
in ggplot2 for R, scales are what scale an aesthetic map uses (example: male = red, female = blue).


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Flashcard 4594434706700

Question
in ggplot2 for R, scales are what scale an *** uses (example: male = red, female = blue).
Answer
in ggplot2 for R, scales are what scale an aesthetic map uses (example: male = red, female = blue).


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Flashcard 4594436279564

Question
in ggplot2 for R *** describes the system in which the locations of the geoms will be drawn
Answer
in ggplot2 for R coordinate system describes the system in which the locations of the geoms will be drawn


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Flashcard 4594438376716

Question
in ggplot2 for R coordinate system describes the system in which the locations of the *** will be drawn
Answer
in ggplot2 for R coordinate system describes the system in which the locations of the geoms will be drawn


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Flashcard 4594439949580

Question
in ggplot2 for R coordinate system describes the system in which the *** of the geoms will be ***
Answer
in ggplot2 for R coordinate system describes the system in which the locations of the geoms will be drawn


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