Download presentation

Presentation is loading. Please wait.

Published byStephanie Riles Modified over 2 years ago

1
Guests staying at Marada Inn were asked to rate the quality of their accommodations as being excellent, above average, average, below average, or poor. The ratings provided by a sample of 20 guests are: Below Average Above Average Average Above Average Average Above Average Average Above Average Below Average Poor Excellent Above Average Average Above Average Below Average Poor Above Average Average Example: Marada Inn Categorical Data

2
1 Poor Below Average Average Above Average Excellent RatingFrequency Example: Marada Inn Total Categorical Data

3
Poor Below Average Average Above Average Excellent Relative Frequency Percent Frequency Rating Example: Marada Inn Total Frequency Categorical Data

4
Poor Below Average Above Average Excellent Frequency Rating Categorical Data Marada Inn Quality Ratings

5
Below Average 15% Average 25% Above Average 45% Poor 10% Excellent 5% Marada Inn Quality Ratings Categorical Data

6
Pelican Stores Pelican Stores is chain of womens apparel stores. It recently ran a promotion in which discount coupons were set to customers of other National Clothing stores. Data collected for a sample of 100 in-store credit card transactions at Pelican Stores during one day while the promotion was running are shown in Table Customers who made a purchase using a discount coupon are referred to as promotional customers and customers who made a purchase but did not use a discount coupon are referred to as regular customers. Because the promotional coupons were not set to regular Pelican Stores customers, management considers the sales made to people presenting the promotional coupons as sales it would not otherwise make. Customer 5 purchased 2 items, … which cost her $54

7
Pelican Stores Pelican Stores is chain of womens apparel stores. It recently ran a promotion in which discount coupons were set to customers of other National Clothing stores. Data collected for a sample of 100 in-store credit card transactions at Pelican Stores during one day while the promotion was running are shown in Table Customers who made a purchase using a discount coupon are referred to as promotional customers and customers who made a purchase but did not use a discount coupon are referred to as regular customers. Because the promotional coupons were not set to regular Pelican Stores customers, management considers the sales made to people presenting the promotional coupons as sales it would not otherwise make. Pelicans management would like to use this sample data to learn about its customer base and to evaluate the promotion involving discounts. Managerial Report 1.Using graphs and tables, summarize the qualitative variables. data_pelican.xls

8
Example: Hudson Auto Repair The manager of Hudson Auto would like to have better understanding of the cost of parts used in the engine tune- ups performed in the shop. She examines 50 customer invoices for tune-ups. The costs of parts, rounded to the nearest dollar Quantitative Data

9
sorted minimum maximum Example: Hudson Auto Repair Quantitative Data

10
Cost ($) Frequency Quantitative Data

11
2/50.04 Relative Freq /50 16/50 7/50 5/ Percent Freq Quantitative Data Cost ($) Frequency

12
Parts Cost ($) Frequency Tune-up Parts Cost Quantitative Data

13
Moderately Skewed Left Symmetric Highly Skewed Right Quantitative Data

14
Ogive for Hudson Auto Repair < 60 < 70 < 80 < 90 < 100 < 110 Cost ($) Cumulative Frequency Parts Cost ($) Parts Frequency Quantitative Data

15
Cumulative Relative Frequency Cumulative Percent Frequency Quantitative Data Ogive for Hudson Auto Repair < 60 < 70 < 80 < 90 < 100 < 110 Cost ($) Cumulative Frequency

16
Parts Cost ($) Cumulative Percent Frequency ($90, 76%) Tune-up Parts Cost Example: Hudson Auto Repair ($50, 0%) ($60, 4%) ($70, 30%) ($80, 62%) ($100, 90%) ($110, 100%) Quantitative Data

17
Pelican Stores -- continued Pelican Stores is chain of womens apparel stores. It recently ran a promotion in which discount coupons were set to customers of other National Clothing stores. Data collected for a sample of 100 in-store credit card transactions at Pelican Stores during one day while the promotion was running are shown in Table Customers who made a purchase using a discount coupon are referred to as promotional customers and customers who made a purchase but did not use a discount coupon are referred to as regular customers. Because the promotional coupons were not set to regular Pelican Stores customers, management considers the sales made to people presenting the promotional coupons as sales it would not otherwise make. Pelicans management would like to use this sample data to learn about its customer base and to evaluate the promotion involving discounts. Managerial Report 1.Using graphs and tables, summarize the qualitative variables. 2.Using graphs and tables, summarize the quantitative variables. data_pelican.xls

18
Summarizing Two variables Finger Lakes Homes.xls Example: Quantitative variable qualitative variable Price Range Colonial Log Split A-Frame Total < $99,000 > $99,000 Total Home Style

19
Price Range Colonial Log Split A-Frame Total < $99,000 > $99, Total Home Style Summarizing Two variables Finger Lakes Homes.xls Example:

20
Price Range Colonial Log Split A-Frame Total < $99,000 > $99,000 Home Style Price Range Colonial Log Split A-Frame Total < $99,000 > $99, Total Home Style Summarizing Two variables

21
Price Range Colonial Log Split A-Frame Total < $99,000 > $99,000 Home Style Price Range Colonial Log Split A-Frame < $99,000 > $99, Total Home Style Summarizing Two variables

22
AdmittedDeniedTotal Male Female Total AdmittedDeniedTotal Male Female Total Dividing all of the frequencies above by the number of observations yields what the joint probability table below The crosstabulation for the aggregated UC-Berkley data is Male acceptance rate is higher when data is aggregated.

23
Female AdmittedDeniedTotal A B17825 Total Male AdmittedDeniedTotal A B Total Female AdmittedDeniedTotal A B Male AdmittedDeniedTotal A B Compute the row percentages to show the Simpsons Paradox Summarizing Two variables data_simpson.xls

24
A Negative Relationship x y Q BigMacs P BigMacs Summarizing Two variables

25
No Apparent Relationship y Q NoseHairTrimmers x P BigMacs Summarizing Two variables

26
Example: Panthers Football Team x = Number of Interceptions y = Number of Points Scored The Panthers football team is interested in investigating the relationship, if any, between interceptions made and points scored. Summarizing Two variables

27
y x Number of Interceptions Number of Points Scored Summarizing Two variables

28
data_pelican.xls Pelican Stores -- continued Pelican Stores is chain of womens apparel stores. It recently ran a promotion in which discount coupons were set to customers of other National Clothing stores. Data collected for a sample of 100 in-store credit card transactions at Pelican Stores during one day while the promotion was running are shown in Table Customers who made a purchase using a discount coupon are referred to as promotional customers and customers who made a purchase but did not use a discount coupon are referred to as regular customers. Because the promotional coupons were not set to regular Pelican Stores customers, management considers the sales made to people presenting the promotional coupons as sales it would not otherwise make. Pelicans management would like to use this sample data to learn about its customer base and to evaluate the promotion involving discounts. Managerial Report 1.Using graphs and tables, summarize the qualitative variables. 2.Using graphs and tables, summarize the quantitative variables. 3.Using pivot tables and scatter plots, summarize the variables.

Similar presentations

© 2016 SlidePlayer.com Inc.

All rights reserved.

Ads by Google