B3 Techniques to analyse data effectively for business purposes

What is the mean in statistics?

• The middle value in a dataset

• The value that appears most frequently

• The arithmetic average of a dataset

• The sum of the highest and lowest values

Which measure of central tendency is most affected by outliers?

• Mean

• Median

• Mode

• Range

How is the median calculated in a dataset with an even number of values?

• By taking the middle value

• By averaging the two middle values

• By finding the most frequent value

• By dividing the sum of all values by the number of observations

What type of data can the mode be applied to?

• Only numerical data

• Only categorical data

• Categorical, ordinal, and discrete data

• Only continuous data

Why is the median considered a more reliable indicator of central tendency in skewed data?

• It is less affected by outliers

• It uses all data points

• It is the most frequent value

• It is the average of all values