Statistics Flashcard Review

Front

What is a circle graph?

Back

A circle graph, or pie chart, is a circular statistical graphic divided into slices to illustrate numerical proportions.

Front

How do you calculate the percentage of a category in a circle graph?

Back

To calculate the percentage, divide the number of responses in that category by the total number of responses, then multiply by 100.

Front

What is the range in a data set?

Back

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

Front

How do you find the range of the data set: 45, 78, 23, 56, 89?

Back

Range = Highest value (89) - Lowest value (23) = 66.

Front

What does it mean to survey a population?

Back

To survey a population means to collect data from a group of individuals to gather information about their preferences or behaviors.

Front

What is a sample in statistics?

Back

A sample is a subset of a population used to represent the entire group.

Front

What is the importance of sample size in surveys?

Back

A larger sample size generally leads to more reliable and valid results, reducing the margin of error.

Front

What is a bar graph?

Back

A bar graph is a chart that presents categorical data with rectangular bars representing the values of each category.

Front

How do you interpret data from a bar graph?

Back

To interpret data from a bar graph, compare the heights or lengths of the bars to understand the differences in values.

Front

What is the mean in a data set?

Back

The mean is the average of a set of numbers, calculated by adding all the values and dividing by the number of values.