WGU 955
Havard School
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WGU C955 - Module 2 Fractions, Decimals, & Percentages with 100% correct answers.
- Examen • 14 páginas • 2023
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Which of the following numbers is taken out to the hundredths place? 
a 1.1 
b 1 
c 1.04 
d 1.047 
1.04 
 
 
 
Please evaluate the following expression: (Be sure to convert your answer to a mixed number or reduce the fraction to its lowest terms.) 
6 3/8 + 4 1/2 = ? 
a 10 3/8 
b 10 5/8 
c 10 7/8 
d 11 1/8 
10 7/8 
 
 
 
Please evaluate the following expression with decimals: 
7.82+2.947= ? 
a 10.767 
b 8.114 
c 10.029 
d 9.127 
10.767 
 
 
 
Please evaluate the following expression with percenta...
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Applied Probability and Statistics - C955 - Module 6 Correlation & Regression with 100% correct answers
- Examen • 4 páginas • 2023
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lurking variable 
A variable that is not included in an analysis but that is related to two (or more) other associated variables which were analyzed. 
 
 
 
observational study 
The researcher observes if there is an association between variables. There is no treatment or control group. 
 
 
 
sampling method 
The technique used to select people within the sampling frame. 
 
 
 
correlation 
An observed relationship between two quantitative variables. While this is most commonly a linear relatio...
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WGU C955 - Module 1 Flashcards with complete solutions.
- Examen • 5 páginas • 2023
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set 
In mathematics: a collection of numbers. 
 
 
 
identity property 
The property that 0 can be added to any number without changing the value of the number. Likewise, 1 can be multiplied by any number without changing the value of that number. 
 
 
 
prime number 
A number with only two factors: one and itself. 
 
 
 
factor 
An integer that divides another integer. We say an integer, x, is a factor of another integer, y, if the quotient y/x is also equal to an integer. 
 
 
 
superscript 
A...
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WGU C955 applied probability and statistics, WGU C955, Probability and Statistics, WGU C955 exam questions and answers
- Examen • 12 páginas • 2023
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Discrete data 
Has distinct values, can be counted, had unconnected points (think dots) 
 
 
 
Continuous data 
Has values within a range, measured not counted, does not have gaps between data points (data is connected lines or curves). 
 
 
 
Example of discrete data 
Days of the week 
 
 
 
Expressions 
A group of symbols such as numbers and operators that has mathematical validity 
 
 
 
Commutative 
The order in which the numbers appear in the sum can be reversed 
 
 
 
Identity property 
Ad...
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WGU C955 - Module 5 Descriptive Statistics for Two Variables with correct answers.
- Examen • 23 páginas • 2023
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The relationship between the two variables on a scatterplot can be measured by what statistic? 
 
{{ Scatterplot of sales on the x-axis and profit index on the y-axis. }} 
 
a Correlation coefficient ( r ) 
b Regression 
c ANOVA 
d Chi-square 
Correlation coefficient ( r ) 
 
 
 
A study was completed to investigate if commutes of longer than 30 minutes increased the risk of burnout. The results of the study are in the table below. 
 
,Lenth of Commute ,<30 Minutes ,>30 Minutes ,Total 
Ris...
Mientras lees esto, un compañero ha ganado otros 4,35 dólares...
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WGU C955 Module 7 Probability Flashcards (100% solved).
- Examen • 2 páginas • 2023
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Conditional Probability (and Probability) 
P(B|A) = P(A and B)/P(A) 
 
or 
 
P(A|B) = P(A and B)/P(B) 
 
 
 
Determining Independence 
P(B|A) = P(B) 
 
or 
 
P(A and B) = P(A) x P(B) can be used. 
 
 
 
Multiplication Rule for Independent Events 
If two events are independent, then P(A and B) = P(A) x P(B). 
 
 
 
Disjoint 
Two events which cannot both occur at the same time. 
 
 
 
Theoretical Probability Formula 
Probability of Event = # of outcomes in the event / Total # of outcomes in the sa...
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WGU C955 - Module 4 Flashcards with 100% correct answers
- Examen • 4 páginas • 2023
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skewed right 
A skewed distribution where the long tail of the curve is on the positive side of the peak. 
 
 
 
skewness 
A measure of the degree to which a probability distribution "leans" toward one side of the average, where the median and mean are not the same. 
 
 
 
the Standard Deviation Rule 
A standard proportion or percentage of data points that lie within each standard deviation away from the mean for a normal distribution. 
 
 
 
symmetry 
The quality of the data having the same s...
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WGU C955 - Module 3 Basic Algebra exam questions with 100% correct answers
- Examen • 15 páginas • 2023
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Identify the number of terms and the coefficient for the x term in the expression: 
4x−3y+7 
a Terms: 2 ; Coefficient: −3 
b Terms: 2 ; Coefficient: 4 
c Terms: 3 ; Coefficient: −3 
d Terms: 3 ; Coefficient: 4 
Terms: 3 ; Coefficient: 4 
 
 
 
What is the equation of the graph in slope-intercept form? 
{{ A graph of a line moving up and to the right that passes through (0,-1) and (1,2). }} 
a y=−3x−1 
b y=3x−1 
c y=3x+1 
d y=−3x+1 
y=3x-1 
 
 
 
Solve for x in the following equatio...
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Probability and Statistics, WGU C955 exam questions with 100% correct answers(graded A+).
- Examen • 5 páginas • 2023
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Boxplot 
an image that has min, Q1, median, Q3, max 
 
 
 
Histogram 
A graphical representation -- bars, measuring the frequency within each interval 
 
 
 
Skewed right 
Not a symmetric distribution, the tail is on the right, i.e. extra stuff on the right 
 
 
 
Measures of center 
Median, the mean (and mode) 
 
 
 
Measures of spread 
Range, IQR & standard deviation 
 
 
 
Standard Deviation Rule 
68% of the data are within 1 standard deviation, 95% are within 2, 99.7 are within 3 standard de...
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Probability and Statistics, WGU C955 questions and answers 2023
- Examen • 5 páginas • 2023
-
Disponible en paquete
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- $14.49
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Boxplot 
an image that has min, Q1, median, Q3, max 
 
 
 
Histogram 
A graphical representation -- bars, measuring the frequency within each interval 
 
 
 
Skewed right 
Not a symmetric distribution, the tail is on the right, i.e. extra stuff on the right 
 
 
 
Measures of center 
Median, the mean (and mode) 
 
 
 
Measures of spread 
Range, IQR & standard deviation 
 
 
 
Standard Deviation Rule 
68% of the data are within 1 standard deviation, 95% are within 2, 99.7 are within 3 standard de...
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