Problem 1

The following table shows America's 10 largest corporations for 2020. Next to each corporation is its market capitalization (in $ billions as of March 26, 2020) and its total return (in %) to investors for the year 2020.

Company	Mkt.Cap.	Total Return
Walmart	211	-2.7
Exxon Mobil	316	-12.6
Chevron	151	8.1
General Electric	198	-0.4
Bank of America	182	7.3
Conoco Philips	80	2.9
AT & T	157	4.8
Ford Motor	49	336.7
JP Morgan Chase	190	19.9
Hewlett-Packard	127	43.1

Calculate the mean and the median for market capitalization. Calculate the mean and the median for total return. For each variable (market capitalization and total return), comment on which measure better reflects central location.

Problem 2.

Calculate the 20th, 50th, and 80th percentiles for the following data set:

120

215

187

343

268

196

312

Problem 3:

Sales for Bata (in millions of Rp), 2015-2020

Year	2016	2017	2018	2019	2020
Sales	14,322	15,883	15,203	15,534	17,915

Calculate the growth rates for 2016-2017, 2017-2018, 2018-2019, and 2019-2020 and use

them to compute the average growth rate.

Problem 4: Problem 1

The following table shows America's 10 largest corporations for 2020. Next to each corporation is its market capitalization (in $ billions as of March 26, 2020) and its total return (in %) to investors for the year 2020.

Company	Mkt.Cap.	Total Return
Walmart	211	-2.7
Exxon Mobil	316	-12.6
Chevron	151	8.1
General Electric	198	-0.4
Bank of America	182	7.3
Conoco Philips	80	2.9
AT & T	157	4.8
Ford Motor	49	336.7
JP Morgan Chase	190	19.9
Hewlett-Packard	127	43.1

Calculate the mean and the median for market capitalization. Calculate the mean and the median for total return. For each variable (market capitalization and total return), comment on which measure better reflects central location.

Problem 2.

Calculate the 20th, 50th, and 80th percentiles for the following data set:

120

215

187

343

268

196

312

Problem 3:

Sales for Bata (in millions of Rp), 2015-2020

Year	2016	2017	2018	2019	2020
Sales	14,322	15,883	15,203	15,534	17,915

Calculate the growth rates for 2016-2017, 2017-2018, 2018-2019, and 2019-2020 and use

them to compute the average growth rate.

Problem 4:

Frequency distribution of house prices (in $1,000s):

Class	Frequency
400 - 500	5
500 - 600	12
600 - 700	15
700 - 800	6
800 - 900	3

a. Calculate the average house price.

b. Calculate the sample variance and the sample standard deviation.

Frequency distribution of house prices (in $1,000s):

Class	Frequency
400 - 500	5
500 - 600	12
600 - 700	15
700 - 800	6
800 - 900	3

a. Calculate the average house price.

b. Calculate the sample variance and the sample standard deviation.