Stats Notation

The spread of 1st period class is greater than the spread of 2nd period class.

• TRUE

• FALSE

Overall 2nd period students have better scores than 1st period.

• TRUE

• FALSE

Find the median of plot B

• 30

• 14

• 28

• 16

Which box and whisker plot has the highest median?

• Top plot

• Bottom plot

In statistics, what does this symbol represent?

• mean

• population mean

• sample standard deviation

• population variance

Define the symbol.

• population mean

• sample size

• sample mean

• sample standard deviation

The distribution of this data set can best be described as...

• Right-skewed

• Left-skewed

• Symmetrical

• Purple

Answer explanation

The tail is on the right, so it is right-skewed.

• mean

• standard deviation

• variance

• sample size

This is an example of a ....

• normal distribution

• skewed distribution

• exponential distribution

• discrete distribution

Which statement is incorrect?

• The index i tell you where to start the sequence of numbers to be added.

• The . . . implies that those terms do not matter.

• Sigma is a greek letter of the alphabet and implies addition in mathematics.

• The number n at the top of the notation tells you what term is last in the list.