a researcher is interested in whether or not a significant trend exists regarding the popularity of certain music played at restaurants. a random sample of 50 customers from each of three restaurants is selected. the customers are asked to indicate which of three music types: country, jazz, and classical they preferred. the results are given for each restaurant by music category. do the results deviate significantly from what would be expected due to chance?

resultsdid not deviatesignificantlyfrom what would be expected due tochance.## What is standard deviation?

standarddeviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation suggests that the values are dispersed throughout a larger range, a low standarddeviationsuggests that the values tend to be near to the established mean. The term “standard deviation” (or “”) refers to a measurement of the data’s dispersion from themean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.standarddeviation,