MMMR & Flashcard 2.1-2.4 practice

Front

What is the formula to calculate the mean of a set of numbers?

Back

To calculate the mean, sum all the numbers in the set and then divide by the total count of numbers.

Front

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

Back

To find the median, first arrange the numbers in ascending order. 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 of a set of numbers?

Back

The mode is the number that appears most frequently in a set of numbers. If no number repeats, there is no mode.

Front

What is a proportional relationship?

Back

A proportional relationship is one where two quantities maintain a constant ratio. If one quantity doubles, the other also doubles.

Front

How do you determine if a relationship is proportional using a graph?

Back

A relationship is proportional if the graph is a straight line that passes through the origin (0,0).

Front

What is the difference between mean, median, and mode?

Back

Mean is the average, median is the middle value when arranged in order, and mode is the most frequently occurring value.

Front

What is the significance of the mean in statistics?

Back

The mean provides a measure of central tendency, summarizing a set of data with a single value that represents the center of the data.

Front

How can outliers affect the mean?

Back

Outliers can skew the mean significantly, making it higher or lower than the central tendency of the majority of the data.

Front

What steps should you take to find the mode in a data set?

Back

Count the frequency of each number in the data set. The number with the highest frequency is the mode.

Front

What does it mean if a data set has no mode?

Back

If no number repeats in the data set, it means there is no mode.