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Statistical Concepts Quiz

Authored by Exequiel Mejia

Mathematics

Professional Development

Used 6+ times

Statistical Concepts Quiz
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does a spurious correlation illustrate?

A real causal link

A non-causal relationship driven by a hidden factor or coincidence

A statistical anomaly that never repeats

A purposeful manipulation of data

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these is not part of a strong hypothesis?

What you are changing

The metric you expect to impact

The expected effect size

The randomization criteria

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

“Reverse causality” is when you mistake the direction of cause and effect.

True

False

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do we avoid feature‑level metrics like “clicks” as primary KPIs?

They’re too hard to track

They don’t directly tie to business impact

They inflate sample‑size needs

They require Chi‑square tests

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statistical test is most appropriate for comparing conversion rates?

Z‑test for proportions

One‑sided t‑test

Chi‑square test

Two‑sided t‑test

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does an “underpowered test” mean?

It has a high false‑positive rate

It has a low chance of detecting a real effect

It tests too many variations at once

It inflates the significance level

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Peeking at results before the test ends primarily increases…

Type II errors (false negatives)

Type I errors (false positives)

Practical significance

Test power

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