Math 209 - Study guides, Class notes & Summaries
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MATH 209 EXAM QUESTIONS AND ANSWERS 2024.
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Statistics 
The science of planning studies and experiments, obtaining data, and then organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions based on the data 
 
 
Data 
Collections of observations 
 
 
 
Population 
The complete collection of all data 
 
 
Census 
Collection of data from every member of the population 
 
 
voluntary response sample 
respondents decide whether to be included 
 
 
Statistical/Critical Thinking Process 
Prepare/Analyze/Conclude 
 
 
...
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MATH 209 FINAL EXAM QUESTIONS AND ANSWERS 2024
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Characteristics of an isoceles triangle 
-at least 2 equal angles 
-at least 2 equal sides 
 
 
 
Characteristics of an equilateral triangle 
-all 3 sides are equal 
-all 3 angles are the equal 
-acute angles (60) 
-ISOCELES 
 
 
 
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Characteristics of a right triangle 
-only 1 right angle 
-sum of angles is 180 
-2 acute angles that add to 90 
-ISOCELES! 
 
 
 
Characteristics of a scalene triangle 
-All sides are different len...
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MATH 209 WITH 100% CORRECT ANSWERS ALREADY GRADED A+.
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Statistics 
Collection of methods for planning experiments, obtaining data, organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions based on data. 
 
 
 
Data 
Collections of observations, such as measurements, that are being considered. 
 
 
 
 
Population 
collect collection of all data or measurements that are being considered. 
 
 
 
Census 
collection of data from every member of the population 
 
 
 
Sample 
Subcollection of members selected from a population ...
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MATH 209 MODULE 2 WITH 100% CORRECT ANSWERS.
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frequency distribution 
Usually tabular display; shows how data partitioned among several categories (classes) by listing the categories + the number (frequency) of values in each of them 
 
 
 
Lower class Limits (LCL's) 
The smallest numbers that can belong to different classes (Ex: UCL'S are 50, 70, 90, 110, 130) 
 
 
 
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Upper Class Limits (UCL's) 
The largest numbers that can belong to different classes (Ex: UCL'S 69, 89, 109, 129, and 149) 
 
 
 
Class Width 
T...
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MATH 209 QUIZ 1 WITH VERIFIED SOLUTIONS ALREADY GRADED A+.
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Parameter 
a numerical measurement describing some characteristic of a population 
 
 
 
Statistic 
measurement describing some characteristic of a sample 
 
 
 
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Mean 
Dividing the sum by the number of items to find the mean. 
 
 
 
Range 
max-min 
 
 
 
Quantitive Data 
numbers representing counts or measurements 
 
 
 
Qualitative Data 
names or labels 
 
 
 
Discrete 
# of possible values is finite or "countable" 
 
 
 
C...
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MATH 209 FORMULAS 2024 LATEST UPDATE
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V=Lengthwidthheight 
volume of rectangular prism 
 
 
 
V=1/2(a+b)h*H 
volume of trapezoidal prism 
 
 
 
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v=1/2(ab)h 
volume of triangular prism 
 
 
 
V=πr^2h 
Volume of a cylinder 
 
 
 
v=1/3(area of base)h 
volume of pyramids 
 
 
 
V=1/3πr^2h 
volume of cone 
 
 
 
V=4/3πr^3 
Volume of a sphere 
 
 
 
SA=2(wl+hl+hw) 
surface area of a rectangular prism 
 
 
 
SA=1/2(s1s2)+1/2(s1s2)+(s1s4)+(s3+s4)+...
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MATH 209 CHAPTER 1 WITH 100% CORRECT ANSWERS ALREADY GRADED A+ 2024 LATEST EXAM
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Statistics 
The science of planning studies, gathering data, organizing, analyzing data for the purpose of interfering proportions in a whole from a sample. 
 
 
 
Data 
Collections of observations, such as measurements, genders, or survey responses. 
 
 
 
Brainpower 
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Population 
The complete collection of all data or measurements that are being considered. 
 
 
 
Sample 
A sub collection of members selected from a population. 
 
 
 
Voluntary Response Sample 
A sample in which t...
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MATH 209 TEST 3 REVIEW QUESTIONS AND ANSWERS ALREADY GRADED A+ 2024.
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Three Criteria for a Discrete Probability Distribution 
1. X values are NUMERICAL 
2. ΣP(x) = 1 
3. 0≤P(x)≤1 
 
 
MEAN for a discrete probability distribution 
μ = ΣP(x)*x 
 
 
 
STANDARD DEVIATION for a discrete probability distribution 
σ = √[Σ (x-μ)^2 * P(x)] 
 
 
FOUR Criteria for Binomial Distribution 
1) Fixed number of trials (n) 
2) Independent trials 
3) Only two outcomes (success/failure) 
4) Probability of success remains constant 
 
 
Binomial Formula 
P(x) = nCx P^x (1 -...
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MATH 209 EXAM QUESTIONS WITH 100% CORRECT ANSWERS 2024
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MATH 209 EXAM QUESTIONS WITH 100% CORRECT ANSWERS 2024
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MATH 209 INFERENTIAL STATISTICS CHAPTER 1 VOCAB EXAM QUESTIONS AND ANSWERS.
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Statistics 
a collection of methods for planning experiments obtaining data and then organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions 
 
 
 
Population 
the complete collection of all elements to be studied 
ex: All college students at Wingate 
 
 
 
 
Sample 
A subset of the population 
ex: Freshmen class at Wingate 
 
 
 
Parameter 
A measurement describing a characteristic of a population 
 
 
 
Statistic 
A measurement describing a characteristic of a sam...
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