Question

Choose all of variables that are continuous.

		The time for an athlete to finish a race
		The number of limbs on an oak tree
		The total number of phone calls a sale representative makes in a month
		The voltage of the electricity in a power line
		The average speed of cars passing a busy intersection between 3:00 PM and 5:00PM

The Central Limit Theorem is important in statistics because _____.

		for a large n, it says the population is approximately normal
		for a large n, it says the sampling distribution of the sample mean is approximately normal, regardless of the population
		for any size sample, it says the sampling distribution of the sample mean is approximately normal
		for any population, it says the sampling distribution of the sample mean is approximately normal, regardless of the sample size

Answer 1

• The time for an athlete to finish a race   : Continuous variable
• The number of limbs on an oak tree : Discrete data
• The total number of phone calls a sale representative makes in a month : Discrete variable
• The voltage of the electricity in a power line : Continuous variable
• The average speed of cars passing a busy intersection between 3:00 PM and 5:00PM : Discrete data

• The central Limit theorem is important in statistics because for a large n, it says the sampling distribution of the sample mean is approximately normal, regardless of the population.