Hotels are rated on the basis of one to five stars. The Holiday Stay Hotel chain rated all 50 of it's hotels. The data is shown in the diagram below.
|
Number of Stars
|
Frequency
|
|
1
|
7
|
|
2
|
10
|
|
3
|
22
|
|
4
|
8
|
|
5
|
3
|
1. Find the standard deviation for this set of data to the nearest hundredth.
2. Did you calculate the sample or population standard deviation?
3. How many hotels have ratings that fall within one standard deviation of the mean?