1. You are trying to decide where the best place to get a pizza delivered from as quickly as possible. Here are the several delivery times of some local pizza places (in minutes).
Ronny’s: 24, 38, 31, 27, 40, 21, 34, 19
John and Mary’s: 18, 69, 22, 27, 32, 25, 16, 25
Penora’s: 19, 42, 23, 42, 24, 39, 20, 25
Use the information above to answer all five questions below. Be detailed in your answer and provide work for all but the five number summary.
A. Find the five number summary, mean, standard deviation, range and interquartile range for all three local pizza places.
B. Determine if there are any outliers for the three pizza places. List the outliers if any for each pizza place.
C. What place do you think Allison and Emily should order from? How did you determine this?
D. For each pizza place, which measure of central tendency (mean or the median) represents the data the best and why?
E. If you were to plot the data for each pizza company, how would the data be described? (Symmetric, Skewed left or Skewed right)
2. Ms. McGregor is a teacher at Wendover High. She surveyed her students to find out how far from school her students lived. The following data is the distance between the school and her students' homes, in miles:
9
10
7
7
8
10
11
10
5
9
8
7
5
2
10
10
14
8
7
4
Use the data provided above to answer the questions below:
Create a boxplot for Ms. McGregor’s class and display it on a number line. Make sure to label your number line clearly so it easy to determine the accuracy of your calculations.
Create a frequency table and histogram of the number of miles students are from the school in the space provided below for Mrs. McGregor’s class
Intervals
Frequency
0 - 3
3 - 6
6 - 9
9 - 12
12 - 15
3. Jonathan compared the ounces in and prices of several different cereals at the grocery store. Here are his results:
ounces
Price (in dollars)
32
$3.89
28
$2.79
42
$4.19
8
$1.00
27
$3.15
12
$2.25
Use the information listed above to answer all questions:
A. Find the line of best fit. Round any decimals to the hundredths place:
y = _____________________
Find the correlation coefficient and explain what it means in the context of the problem:
Correlation coefficient: _____ Explanation:
C. Estimate the price when you have a weight of 48 ounces. Show all work for credit.
D. Estimate the ounces when you have a price of $3.50. Show all work for credit.
E. Find the residuals for your data. You can provide a screenshot from your calculator or
show all work to identify your residuals.
F. Provide a screenshot of your residual plot from your calculator below.
G. Explain if your equation is a good fit for your data based on your screenshot from your
residual plot