A stemplot for a sample of yearly returns (in %) on US stocks is given below. -1 81 -019432 0|114589 1|03456 2|128 3129 41 515 (a) Find the mean and st.dev. (b) Find the median and the 20th percentile. (c) Describe the shape of stock returns distribution. (d) based on the shape, which is true? i. mean median iii. mean > median ii. mean is very close to median (e) Make a histogram of the returns, using class intervals -20-0, 0-20, etc. (f) Make a boxplot of the returns
A stemplot for a sample of yearly returns (in %) on US stocks is given below. -1 81 -019432 0|114589 1|03456 2|128 3129 41 515 (a) Find the mean and st.dev. (b) Find the median and the 20th percentile. (c) Describe the shape of stock returns distribution. (d) based on the shape, which is true? i. mean median iii. mean > median ii. mean is very close to median (e) Make a histogram of the returns, using class intervals -20-0, 0-20, etc. (f) Make a boxplot of the returns
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section11.3: Shapes Of Distributions
Problem 22E
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Transcribed Image Text:A stemplot for a sample of yearly returns (in %) on US stocks is given
below.
-1 81
-019432
0|114589
1|03456
2|128
3129
41
515
(a) Find the mean and st.dev.
(b) Find the median and the 20th percentile.
(c) Describe the shape of stock returns distribution.
(d) based on the shape, which is true?
i. mean
median
iii. mean > median
ii. mean is very close to median
(e) Make a histogram of the returns, using class intervals -20-0, 0-20,
etc.
(f) Make a boxplot of the returns
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