Alg 1: Keystone Algebra Review #3

Front

What is a box and whisker plot?

Back

A box and whisker plot is a graphical representation of data that shows the distribution of a dataset based on five summary statistics: minimum, first quartile (Q1), median (Q2), third quartile (Q3), and maximum.

Front

What does median mean in statistics?

Back

The median is the middle value of a dataset when it is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

Front

What is the purpose of the vertical line test?

Back

The vertical line test is used to determine if a graph represents a function. If any vertical line intersects the graph at more than one point, the graph does not represent a function.

Front

What does it mean to cross multiply in algebra?

Back

Cross multiplying is a method used to solve proportions. If you have a proportion a/b = c/d, you can cross multiply to get ad = bc.

Front

What are quartiles in statistics?

Back

Quartiles are values that divide a dataset into four equal parts. The first quartile (Q1) is the median of the lower half, the second quartile (Q2) is the median of the dataset, and the third quartile (Q3) is the median of the upper half.

Front

How do you find the range of a dataset?

Back

The range is found by subtracting the smallest value in the dataset from the largest value. Range = Maximum - Minimum.

Front

What is a function in mathematics?

Back

A function is a relation that assigns exactly one output for each input. It can be represented as f(x), where x is the input.

Front

What is the difference between independent and dependent variables?

Back

An independent variable is the variable that is changed or controlled in an experiment, while a dependent variable is the variable that is measured or affected.

Front

What is the significance of the interquartile range (IQR)?

Back

The interquartile range (IQR) measures the spread of the middle 50% of a dataset. It is calculated as Q3 - Q1 and is used to identify outliers.

Front

What does it mean for two variables to be directly proportional?

Back

Two variables are directly proportional if they increase or decrease together at a constant rate. This means that their ratio remains constant.