2. The typical price for a meal was recorded for a sample of 20 restaurants loca

ID: 3353380 • Letter: 2

Question

2. The typical price for a meal was recorded for a sample of 20 restaurants located in the Los Angeles area a. Summarize this information. You MUST show your output. Be professional! Use complete sentences, with correct grammar and spelling. Round appropriately and include the units! (4 pts.) PUT YOUR ANSWERS IN THE SPACE BELOW! You lose 1 point if you choose to put your answers some other place! Meal Prices ($) 15.27 41.14 17.53 18.29 18.57 29.54 20.44 23.77 24.6 26.84 28.74 28.89 29.3 30.79 31.5 33.81 34.34 38.72 38.97 44.56

Explanation / Answer

Answer:

a).

Descriptive statistics

meal price

count

mean

28.7805

sample standard deviation

8.3104

sample variance

69.0627

minimum

15.27

maximum

44.56

range

29.29

1st quartile

22.9375

median

29.0950

3rd quartile

33.9425

interquartile range

11.0050

The average meal price was $28.78 with standard deviation of $8.31.

b).

yes. ( because mean and median are approximately same , data are approximately symmetric.)

mean-2*sd = 28.78-2*8.31 =12.16

mean+2*sd = 28.78+2*8.31 =45.4

$44 is within 2 standard deviations of the mean. $44 is not an unusually high price.