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WPC concept quiz 4, WPC Concept Quiz 3, Chapter 4, Chapter 5 fully solved
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WPC concept quiz 4, WPC Concept Quiz 3, Chapter 4, Chapter 5 fully solved
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WPC concept quiz 4, WPC Concept Quiz3, Chapter 4, Chapter 5 fully solved
Multicollinearity occurs when
two independent variables in the regression model are highly correlated
What would be an example of a null hypothesis when you are testing correlations between random
variables x and y?
there is no significant correlation between the variables x and y
A regression analysis is used to determine the
degree of association between variables
In a regression model, outliers may be identified by examining the
residuals
Which of the following statements is true for an experimental study?
A proper design of the experiment is required to study a certain effect of the intervention
In a linear regression model, the dependent variable is "Final exam score (%) for WPC 300" and the
independent variable is "Hours studied". A coefficient of 4 could be interpreted as for every
hour of additional study, the expected final exam score increases by 4%.
, Which of the following questions are unsuitable for A/B testing?
which feature should I launch next?
For a given problem, if you determined that you need to predict the outcome to make a decision and
also anticipate the behavioral change of the subject, what kind of big guns analysis would you perform?
Game theory model and simulation
You are using 100 college students to find out how hours of revision affect their performance in a
college-level Spanish language exam. Which of the following variables could be a confounding variable
for your study?
what language is spoken at home by these students
Data visualization is important because:
90% of the information transmitted to the brain is visual
The starting point in telling a compelling story is:
revisiting your problem definition
In the picture below, which principle of data visualization is not met:
The principle of graphical integrity
Which of the following is one of the recommended approaches to visually structure your story?
Answer the question -> summarize the situation -> observations that support the action
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