Basic Statistics Review for Flex

Front

What is the median in a set of numbers?

Back

The median is the middle number in a sorted list of numbers. If there is an even number of values, the median is the average of the two middle numbers.

Front

How do you find the range of a set of numbers?

Back

The range is found by subtracting the smallest number from the largest number in the set.

Front

What is the mean of a set of numbers?

Back

The mean is the average of the numbers, calculated by adding all the numbers together and dividing by the total count of numbers.

Front

What does it mean if a graph is skewed left?

Back

A left-skewed graph has a longer tail on the left side, indicating that most values are concentrated on the right.

Front

How do you determine the total number of items surveyed in a dot plot?

Back

Count the total number of dots in the dot plot, as each dot represents one item.

Front

What is a mode in statistics?

Back

The mode is the number that appears most frequently in a data set.

Front

What is a bar graph used for?

Back

A bar graph is used to compare different categories of data using rectangular bars.

Front

What is a line graph used for?

Back

A line graph is used to show trends over time by connecting data points with a line.

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data.

Front

What does it mean for data to be symmetrical?

Back

Symmetrical data is evenly distributed around a central point, meaning the left and right sides of the graph are mirror images.