Ds Practice: Measure of Central Tendency

Front

What is the mode in a set of data?

Back

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

Front

How do you find the median of a data set?

Back

To find the median, arrange the data in ascending order and identify the middle value. If there is an even number of values, the median is the average of the two middle values.

Front

What is the mean of a data set?

Back

The mean is calculated by adding all the values in a data set and dividing by the number of values.

Front

When is the median a better measure of central tendency than the mean?

Back

The median is better when the data set has outliers or is skewed, as it is not affected by extreme values.

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set.

Front

How do you calculate the mean of the following data set: 5, 10, 15, 20?

Back

Mean = (5 + 10 + 15 + 20) / 4 = 12.5.

Front

What is the difference between the mean and median?

Back

The mean is the average of all values, while the median is the middle value when the data is ordered.

Front

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

Back

It means that no number appears more than once in the data set.

Front

How can you identify the mode in the data set: 1, 2, 2, 3, 4?

Back

The mode is 2, as it appears most frequently.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) / (Number of values).