Summarizing Data Flashcards
What are scatterplots?
visualization useful in visualizing the relationship between two variables
What is a positive relationship?
one goes up, the other also goes up
What is a negative relationship?
One goes down, the other goes up
Which variable is on the x axis?
explanatory variable
Which variable is on the y axis?
response variable
What is an independent relationship?
Not related
What are dot plots?
visualization useful in visualizing one numeric variable
What are the measures of center?
Mean and Median
What is mean?
average
What is median?
middle
What is the informative measure of center?
mean
What is the robust measure of center?
median
What is symmetric distribution?
sample mean = sample median
What is left skew?
sample mean < sample median
What is right skew?
sample mean > sample median
