Exploring One–Variable Data
When comparing standard deviations from two distinct but related samples where one sample size is significantly larger than another, what inference can be made if their standard deviations are similar?
Which of the following provides the best measure of center for a highly skewed distribution with outliers?
Given a positively skewed distribution, which measure of spread might give a misleading impression of variability if outliers are present?
In measuring heights of students in an AP Statistics class, one student's height is much greater than others'; this student's height could be considered what type of value?
In the context of regression analysis, if the correlation coefficient squared equals what percentage of explained variation in the dependent variable (y) can be attributed to the independent variable (x)?
What describes IQR or interquartile range?
Given five number summary data (minimum, Q1, median , Q3 , maximum) with Q3 being substantially closer to the maximum than Q1 is to minimum , indicates which characteristic in boxplot?
How are we doing?
Give us your feedback and let us know how we can improve
Which summary statistic could decrease even if additional high-value outliers are added to a right-skewed distribution?
What statistical measure indicates how spread out numbers are in your dataset?
What statistic could reveal whether two variables have a linear relationship if you're considering two quantitative variables with potential outlier influence?