Vocabulary
Misc.
Plots Basics
Distributions & Stuff
Do you remember this???
100
This is a graph you can use to show the relation of two quantitative variables.
What is a scatterplot?
100
where the final digit of a number goes on this kind of plot.
What is a leaf on a stem and leaf plot???
100
if the rounded percents of a given data do not equal to 100 percent you have done this.
What is roundoff errors?? (Screwed up the rounding)
100
it consists of the median, the quartiles, and the high and low extremes and provides a quick overall description of a distribution.
What is a five number summary?
100
these are the statistics you find when you meet a new set of numerical data?
mean, standard deviation
200
The three adjectives that describe a distribution.
Shape, Center, and Spread
200
standard deviation is a measure of this.
What is spread?
200
finding the middle value in a set of numbers.
What is the median?
200
A value of how far observations are from their mean.
What is z-score?
200
A variable that cannot be assigned a numerical value, just a description
What is a categorical variable?
300
A graphical display of a five-number summary
What is a boxplot?
300
the science (and art) of learning from data.
What is statistics?
300
A piece of data that is more than 1.5 times the IQR away from the 1st or 3rd quartile
What is an outlier?
300
This is the measure of central tendency that is resistant to outliers
What is the median
300
These types of data take on numerical values for which arithmetic operations such as adding and averaging make sense.
What is a quantitative variable?
400
These can be used when comparing quantitative distributions of 2 different categories or populations.
What are back to back stem plots
400
The group of people/things/places/animals that you are trying to gain information about.
What is a population?
400
This shows how the proportion of data approaches 100% on a graph
What is a relative cumulative frequency graph?
400
symbols used to represent population statistics
What are Greek Letters?
400
This type of data analysis fits a line to a scatterplot
What is linear regression? (Or the least squares regression)
500
a graph that graphs time horizontally and the values of the variable vertically.
What is a time plot?
500
This method of data gathering consists of watching a group of individuals to gain information rather than manipulating a variable or variables in an experiment.
What is an observational study.
500
A plot that shows the frequency of results.
What is a dot plot?
500
these are the same in a normal distribution
What are the mean and median?
500
Produces answers to specific questions with a level of confidence that the answer is correct. (using stats to predict the future)
What is Statistical inference?