In a normal Q-Q plot, we expect to see data points line up to form a straight line when they are random samples from a normal distribution. As in almost all statistical rules, this expectation is literally an “expectation” or what we expect to see on average. When the sample size of the data is small, a normal Q-Q plot may not entirely resemble a straight line even when the data points are truly random samples from a normal distribution. Use my.qqnorm (rnorm (20)) repeatedly to draw several normal Q-Q plots, each using 20 random numbers drawn from the standard normal distribution to see the likely departure from a straight line.

"Looking for a Similar Assignment? Get Expert Help at an Amazing Discount!"
Looking for a Similar Assignment? Our Experts can help. Use the coupon code SAVE30 to get your first order at 30% off!

Hi there! Click one of our representatives below and we will get back to you as soon as possible.

Chat with us on WhatsApp