AP Stats Practice Exam Questions Fully Answered.

distribution - Answer visual representation of possible values and their frequency What is a histogram?What does it do? - Answer Uses adjacent bars to show the distribution of a quantitative variable. Each bar represents the frequency of values falling in each bin. gap - Answer a region of distribution where there are no values What do we use to describe shape? - Answer Number of modes, uniform or skewed, and outliers and gaps center - Answer the place in the distribution of a variable that you'd point to if you wanted to attempt the impossible by summarizing the entire distribution with a single number spread - Answer a numerical summary of how tightly the values are clustered around the center. (includes the IQR & standard deviation) What is mode and what are the different kinds of mode? - Answer a hump or local high point in the shape of the distribution of a variable Unimodal, bimodal, multimodal What does it mean to be uniform and what does it look like? - Answer a distribution that's roughly flat is said to be uniform symmetric - Answer a distribution is symmetric if the two halves on either side of the center that looks like a mirror of the data for each side skewed - Answer When data is clustered on one side of the graph tails - Answer are the parts that typically trail off on either outliers - Answer are extreme values that don't appear to belong with the rest of the data median - Answer is the middle value of the data set