M1 Data Analysis B

Front

What is data analysis?

Back

Data analysis is the process of inspecting, cleaning, transforming, and modeling data to discover useful information, inform conclusions, and support decision-making.

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What is the mode in a data set?

Back

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

Front

How do you calculate the average (mean) of a data set?

Back

To calculate the average, sum all the values in the data set and then divide by the number of values.

Front

What is a percentage?

Back

A percentage is a fraction expressed as a part of 100, used to compare relative sizes of quantities.

Front

How do you find the percentage of a subset within a total?

Back

To find the percentage, divide the subset amount by the total amount and multiply by 100.

Front

What is a range in statistics?

Back

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

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What does it mean to have a sample size in data analysis?

Back

Sample size refers to the number of observations or data points collected in a study, which affects the reliability of the results.

Front

How can you interpret a bar graph?

Back

A bar graph displays categorical data with rectangular bars, where the length of each bar represents the value of the category.

Front

What is the significance of outliers in data analysis?

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Outliers are data points that differ significantly from other observations; they can skew results and affect statistical analyses.

Front

What is a frequency distribution?

Back

A frequency distribution is a summary of how often each value occurs in a data set.