Sample exam 1a solutions
Part I
Multiple Choice. Circle the letter of the correct/best answer.
1.
Boxplots have been used successfully to describe
A. center of a data set
B. spread of a data set
C. the extent and nature of any departure from symmetry
D. i
Chapter 1 Overview and Descriptive Statistics Uses of statistics: 1. Designing experiments to collect data 2. Extracting information from data 3. Making informed decisions and intelligent predictions in the presence of uncertainty and variation Desc
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Topics to review for Midterm-2
Chapter 5:
Joint probability mass function, Joint probability density function
Marginal probability mass function, Marginal probability density
function
Conditional distributions
Expected values of jointly distributed random
Stat 360 Midterm 2 Name
Show as much work as possible in the space provided.
1. Suppose a population P consists of the set of numbers P=cfw_4,7,7,6,6
a. Give the distribution of the population. '
b. Find the population mean.
G. Let X1 and X2 denote a rand
Stat 360 Midterm 2 Name
Show as much work as possible in the space provided.
1. Su oult Pconst fth tf b P: 4,7766 .4,
pposeapp ann Isso eseonum ers cfw_ [email protected]) ;
a. Give the distribution of the population.
Vw
b. Find the population ean, . J; 2 #2:
W Ia
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Chapter 2 Probability
Section 2.1 Sample Spaces and Events Experiment any action or process whose outcome cannot be predicted based on knowledge of experimental conditions Sample space S the set of all possible outcomes of an experiment Example: T
Chapter 3 Discrete Random Variables and Probability Distributions 3.1 Random Variables A random variable (r. v.) is any rule that associates a number with each outcome in the sample space S. Random variables are denoted by capital letters (i.e., X, Y
Chapter 4 Examples 1. Assume the waiting time at a bus stop is uniformly distributed on the interval [0, 5]. The probability that it is between 1 and 3 minutes on any particular occasion is
2. Let X denote the vibratory stress (psi) on a wind turbin
Sample exam 1b
Part I.
Multiple Choice.
Circle the letter of the correct/best answer.
1.
The mean x of the data set cfw_8, 20, 18, 8, 9, 16, 10, 11 is _.
A. 8.5
B. 12.5
C. 11
D. 8
2.
If
A.
B.
C.
D.
3.
If a six-sided die is tossed three times in succession
Sample exam 1b solution
Part I.
Multiple Choice.
Circle the letter of the correct/best answer.
1.
The mean x of the data set cfw_8, 20, 18, 8, 9, 16, 10, 11 is _.
A. 8.5
B. 12.5 = 100/8
C. 11
D. 8
2.
If
A.
B.
C.
D.
3.
If a six-sided die is tossed three ti
Sample exam 1a
Part I
Multiple Choice. Circle the letter of the correct/best answer.
1.
Boxplots have been used successfully to describe
A. center of a data set
B. spread of a data set
C. the extent and nature of any departure from symmetry
D. identificat
27/ ' Stat 360 Midterm-l
02/22/2017
Instructions:
0 It is a closed book exam.
0 Only your notes and Cumulative Distribution Tables are allowed.
- Calculator is allowed. No cellphones, laptops or tablets.
o The time limit is 50 minutes.
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