Question 1
2 / 2 pts
Which of the following is true about A/B testing?
You should test multiple elements of your landing page at a time and compare
A neutral result on an A/B testing means you correctly performed the test
You need to attend WPC 300 course to learn about A/B Testing
Correct!
Correct Answer
To increase conversion rate of your website traffic, A/B testing can be beneficial.
Question 2
0 / 2 pts
Bessel correction is applied to
Population covariance
You Answered
Population variance
Correct Answer
Sample covariance
Sample data
Question 3
2 / 2 pts
A researcher wants to find out if lack of exercise leads to weight gain. Which of
the following variables could be considered as a confounder?
Exercise level
Time of exercise
Correct!
Correct Answer
Age
Weight
Question 4
2 / 2 pts
What are the three principles of describing data?
Correct!
Correct Answer
center, spread and shape
Centrality, dispersion and size
Mean, median and mode
Dispersion, range and standard deviation
Question 5
2 / 2 pts
In inferential statistics, a _____________ is used to infer about a
______________.
Sample, significance
Correct!
Correct Answer
sample, population
Population, significance
Population, sample
Question 6
2 / 2 pts
What is the first step of running an A/B testing?
You Answered
Creating three variations for your landing page elements
Establishing the conversion rate
Correct Answer
Establishing your success metric
Making assumptions about your customer behavior
Question 7
2 / 2 pts
Standard deviation of a normal data distribution is a ___________________
Measure of data centrality
Measure of data shape
Measure of data quality
Correct!
Correct Answer
Measure of data dispersion
Question 8
0 / 2 pts
When two variables are highly positively correlated, the correlation coefficient will
be ______________
Close to 10
Correct Answer
Close to 1
Close to -1
You Answered
Close to 0
Question 9
2 / 2 pts
In the experimental design example "IQ Water", students are called
Correct!
Correct Answer
Experimental units
Treatments
Response variable
Measurement units
Question 10
0 / 2 pts
For a normal distribution mean is _____________ to median.
Less than
You Answered
