Unit Test #1 Review

Front

What is the median?

Back

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

Front

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

Back

1. Arrange the numbers in ascending order. 2. If the count of numbers is odd, the median is the middle number. If even, it is the average of the two middle numbers.

Front

What is the mode?

Back

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

Front

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

Back

Identify the number(s) that occur most frequently in the data set. A set may have one mode, more than one mode, or no mode at all.

Front

What is the range of a set of numbers?

Back

The range is the difference between the highest and lowest values in a data set.

Front

How do you calculate the range?

Back

Subtract the smallest number in the set from the largest number.

Front

What is an outlier?

Back

An outlier is a value that is significantly different from the other values in a data set, often much higher or lower.

Front

How can you identify an outlier in a data set?

Back

Look for values that are much higher or lower than the rest of the data. Statistical methods like the IQR (Interquartile Range) can also be used.

Front

What is a dot plot?

Back

A dot plot is a simple statistical chart that consists of dots plotted above a number line, representing the frequency of data points.

Front

How do you create a dot plot?

Back

1. Draw a number line. 2. For each data point, place a dot above the corresponding value on the number line.