Megha Majumder  STATS 131A!
2/2 HW!
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#3 page 94!
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From the mid1960s to the early 1990s, there was a slow but steady decline in SAT scores. For
example, take the Verbal SAT. The average in 1967 was about 543. By 1994, the average was
down to about 499.
Name: _Megha Majumder_
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Section/GSI: _Erin, Sec 105_
ESPM C167 / PH C160: Environmental Health and Development  Spring 2016
Library Resource Assignment Due Thursday February 4th in class
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This assignment will walk you through a series of library best
Stats 131AL !
Megha Majumder!
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#4 exercise set A page 143!
4. As in exercise 2, but you double each value of x!
x!
y!
2!
2!
4!
3!
6!
1!
8!
5!
10!
6!
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r = 0.76!
If you doubled the x values, then the deviations of the x values from the mean are doubled, b
Name: _Megha Majumder_
Section/GSI: _Erin, Sec 105_
ESPM C167 / PH C160: Environmental Health and Development  Spring 2016
Library Resource Assignment Due Thursday February 4th in class
This assignment will walk you through a series of library best pract
Megha Majumder!
Stats 131A!
!
#6 p106!
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Among entering students at a certain college, the men averaged 650 on the Math SAT,
and their SD was 125. The women averaged 600 but had the same SD of 125. There
were 500 men and 500 women. !
(a) 600+650 / 2 = 625
#4a p. 132!
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4a) Using the same data as in exercise 3, say whether each of the following students was on
the SD line:!
(a) height 75 inches, weight 180 pounds  YES (exactly 2 standard deviations above average)!
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#1a p.134 exercise set D!
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1. For eac

title: "Stat 133 HW04: String Manipulation and Regex"
author: "Your name and SID"
output: pdf_document

# Introduction
This assignment has two purposes:
a) to familiarize you with manipulating character strings
b) to introduce you to regular expression

title: "Stat 133 HW03: Flow Control Structures and Functions with R"
author: "Your name and SID"
output: pdf_document

# Introduction
This assignment has two purposes:
a) to familiarize you with control flow structures in R
b) to introduce you to writ
# =
# Stat133: HW 2
# Description: Basic manipulation of data structures
# and creation of simple graphics
# Data: Camping Tents
# =
# Please submit your own R script file to bcourses
# Write your name
# Name:
# =
# Reading the Data Into R
# =
# We'll be
# =
# Stat133: HW 1
# Description: Basics of character vectors
# Data: Teams that played the superbowl
# =
# Please submit your own R script to bcourses
< Updated upstream
# Write your full name
# Name:
=
# Write your name
# Name:Wenqing(Linda) Xu
> Stash
Ch 1: Sections 1, 3, 4, 5, 6, R
1.1 (7, 8)
1.3 (3, 5, 6, 7, 10, 11)
1.4 (3, 5)
1.5 (1, 5)
1.6 (1, 5, 7)
1.R (7, 11, 12, 14, 15, 16, 19)
1.1 7
Suppose two dice are rolled. Find the probabilities of the following events.
a) the maximum of the two numbers r
Ch 4: Sections 1, 2, 4, 5, 6, R
4.1 (1, 2, 3, 5, 9, 10, 11)
4.2 (1, 5)
4.4 (1, 3, 4, 7)
4.5 (3. 5)
4.6 (1, 5)
4.R (3, 4, 5, 6, 11, 12, 13, 16, 18, 21, 22, 23)
4.1 1
What is the probability that a standard normal random variable has value
a) between 0 and