chapter 7

Question 1

The 68-95-99.7 Rule

Answer 1

• 68% of all values fall within 1 standard deviation of the mean
• 95% of all values fall within 2 standard deviations of the mean
• 99.7% of all values fall within 3 standard deviations of the mean

Question 2

Boxplot

Answer 2

Black line represents median, the block shape represents the interquartile range.

Question 3

Histogram

Answer 3

Bar area’s represent the relative frequency of the data.

Question 4

Central Limit Theorem

Answer 4

The sample mean will be approximately normally distributed for large sample sizes, regardless of the distribution from which we are sampling.

Question 5

The Law of Large Numbers

Answer 5

it states that if you repeat an experiment independently a large number of times and average the result, it should be close to the mean (expected value)