Guided, difficulty 1 of 3
A quick skewness index
A retailer's daily sales (SAR) have mean 790, median 590 and standard deviation 330.
Pearson's second skewness coefficient is . Calculate it to 2 decimal places and note its sign.
Practice
Practise until it sticks
Choose a topic, a skill or a difficulty. Calculation exercises have new versions with fresh numbers once you have solved them, so you can practise the method rather than memorise an answer.
← Back to the list · from Shape: skewness and kurtosis
Not started