General Statistics Info (Section 1)
One way to gather data.
What are surveys?
typical always center?
What is no.
bin on a histogram
what is the sections on x-axis (what we count by)
One function on dashboard
what is...
- histograms (when - date & time), donut plot (when - time of day, salty/sweet, cost, why), bargraphs (healthy level, calories), word plot, pictures of snacks (click for all info), map (location survey submitted)
symbol to take notes in RScript
what is #
Define data
What is information that is collected and recorded
define frequency
what is the count/number of times the outcome occurs
Symmetric
what is the histogram that has a peak and matches on both sides
Plot app function - what's it do?
What is a tool to plot any x & y variable provided on a graph
2 codes that give same info as dim(cdc)
what is nrow(cdc) and ncol(cdc)
What is varying data (spread out data) & need it to have data - otherwise just have info (have to be able to ask statistical questions and need variability for that.
define typical & give ex.
what is the data that has the most common occurrence
Examples vary (Ex: most students got 4 hours of sleep or we typically prefer sweer snacks)
3 types of modes for histograms & meaning
Unimodal (1 peak), bimodal (2 peaks), multimodal (more than 2 peaks)
Function used for 2 numerical variables
what is a scatterplot or xyplot
3 steps to input food data
bonus = extra direction between step 2 & 3
what is export, upload, import
bonus = rename dataset
2 types of variables & the difference
What are numerical and categorical variables. Num = just numbers (random), Cat = words or NUMBERS THAT ARE GROUPED.
better representation that a tangible plot, why?
what is a dotplot because the data is organized and easier to read/interpret
right-skewed vs left-skewed
right = peak on left and tails to right
left = peak on right and tails to left
label a new lab? (4 pieces)
what is # (2 for 2nd hour, 3 for 3rd hour), lab name (ex: lab 1E), last name, first name
4 parts of the data cycle & an example of one part.
What are pose statistical investigative question, collect data, analyze data & interpret data.
Examples will vary: stat question, table of info, graph of data, an answer to a stat question
find range
What is maximum value - minimum value =range
algorithm & example
Bonus = what did we do when learning this?
what is a specific input (typed exactly correct (syntax)) that produces the same output every time.
Bonus = peanut butter jelly sandwich
Describe difference between grouping & splitting/faceting - in input (code) AND in output (plot/graph)
what is:
codes: for grouping, groups = (variable) at end of code, for splitting | then variable after the original variables on x & y axis
plots: grouping has data grouped on one graph (using different colors or types of dots or splitting the bars into multiple sections), and splitting has data split onto multiple graphs based on the variable (Ex: gender= 2 side by side graphs, healthy level = 5 side by side graphs)
basic coding formula & what each piece is & example
what is function(y~x, data=____)
function = type of output
y & x = outputs
~ tilde
data= ____ is name of data set
Ex: will vary. Ex: histogram(~sugar, data=food)