Activity 1: Review

• sample standard deviation

• sample variance

• population standard deviation

• population variance

• sample mean

• population mean

• sample standard deviation

• population standard deviation

• sample mean

• population mean

• sample standard deviation

• population standard deviation

Which of the following is the symbol for sample size?

• N

• n

• s

• sample standard deviation

• sample variance

• population standard deviation

• population variance

What is the symbol for sample standard deviation?

What is the formula for the degrees of freedom?

• n - 1

• n + 1

• 1 - n

• 1 + n

• 0.25

• 0.075

• 0.025

• 0.015

• 23

• 24

• 25

• 26

We use t-distribution if?