Statistics Communication & Stakeholder Relations 2

Question 1

A statistician is presenting regression results to a non-technical board. Which approach best communicates a significant predictor?

Accepted Answer

State 'for every 1-unit increase in X, Y increases by B units on average'

Answer

Plain-language interpretation of the slope coefficient makes regression results actionable for non-technical audiences.

Question 2

A client insists that a correlation of 0.3 between advertising spend and sales 'proves' advertising causes sales. What is the statistician's best response?

Accepted Answer

Explain that correlation does not imply causation and suggest an experimental design

Answer

Correlation only measures linear association; establishing causation requires controlled experimentation or causal inference methods.

Question 3

Which visualization is most appropriate when presenting the distribution of a continuous variable to stakeholders unfamiliar with statistics?

Accepted Answer

A histogram or density plot

Answer

Histograms and density plots intuitively show shape, center, and spread without requiring statistical background knowledge.

Question 4

A project manager asks for a '95% confidence interval' explanation. Which analogy is most accurate?

Accepted Answer

If we repeated the study many times, about 95% of such intervals would contain the true parameter

Answer

A confidence interval is a procedure property: 95% of intervals constructed this way capture the true parameter across repeated samples.

Question 5

A stakeholder asks why you used a log transformation on the outcome variable. What is the clearest justification?

Accepted Answer

It stabilizes variance and addresses right skew, improving model assumptions

Answer

Log transformations are applied to reduce heteroscedasticity and normalize right-skewed distributions to satisfy regression assumptions.

Statistics Practice Test

Statistics Practice Test

Statistics Communication & Stakeholder Relations 2