Statistics Quiz

Which measure of spread is calculated after the mean?

• Standard Deviation

• Mode

• Median

• Mean

Which measure of center is described as the middle value of a dataset?

• Median

• Mode

• Mean

• Standard Deviation

What is the formula for the mean of a sample?

• x̄ = Σx/n

• s = Σ(x−x̄)²/n−1

• μ = Σx/n

• σ = Σ(x−μ)²/n

What is the symbol for the standard deviation of a population?

• σ

• s

• x̄

• μ

Which measure is used to describe the most common color of candies in a dish?

• Mode

• Mean

• Median

• Standard Deviation

What does the interquartile range measure?

• Spread of the middle 50% of data

• Most frequent value

• Middle value

• Sum of all values

Which measure of center is often used when data is extremely varied?

• Median

• Mode

• Mean

• Standard Deviation

What is the formula for the standard deviation of a sample?

• s = Σ(x−x̄)²/n−1

• x̄ = Σx/n

• μ = Σx/n

• σ = Σ(x−μ)²/n

What is the significance of the mode in a dataset?

• Most frequent value

• Middle value

• Average value

• Spread of data

How do you find the median if there is an even number of values?

• Choose the highest value

• Choose the lowest value

• Calculate the mean of the two middle numbers

• Use the first value