Mathematics & Logic

Data Analysis in Practice

Apply your statistical knowledge to real-world problems requiring quantitative reasoning.

#logic#statistics#probability#data analysis#hypothesis testing#2026 quiz#distributions#inference

Quiz Intelligence

Total Questions

Difficulty Level

medium

Progress

0/0

Quiz Questions

Answer all questions below and test your knowledge.

1
A company tests a new website design with 100 randomly selected users, comparing conversion rates to the old design. What type of statistical test is most appropriate to determine if the new design has a significantly higher conversion rate?
Question 1
2
The correlation coefficient between study hours and exam scores for a class is found to be 0.85. Which interpretation is correct?
Question 2
3
In a hypothesis test, the p-value is calculated as 0.03. If the significance level is set at 0.05, what is the correct conclusion?
Question 3
4
A dataset has a mean of 50 and a standard deviation of 10. According to Chebyshev's inequality, what is the minimum proportion of data guaranteed to lie within 2.5 standard deviations of the mean?
Question 4
5
A confidence interval for a population mean is calculated as (42.1, 49.3) from a sample. If the null hypothesis states the population mean is 45, what should you conclude at the corresponding significance level?
Question 5
6
A researcher wants to estimate the average height of adults in a city. She uses a simple random sample of 400 people. Which factor will NOT reduce the width of a 95% confidence interval for the mean height?
Question 6
7
A factory's production process is designed to fill bags with a mean of 500g. Quality control takes periodic samples. Which scenario describes a Type II error?
Question 7
8
The power of a statistical test is defined as:
Question 8

Never miss a quiz!

Daily challenges on Telegram

Join Now

Expand Your Mind

Movies & TV

easy5 Qs

Iconic Movie Quotes Quiz

How well do you know your movie lines? See if you can match these famous quotes to their films!

Entertainment

hard8 Qs

80s Movie Mania: The Ultimate Trivia Gauntlet

Think you know your 'Back to the Future' from your 'Blade Runner'? Prove your 80s movie mastery with these challenging questions!

Travel & Places

medium6 Qs

Can You Name These Capital Cities?

Put your global knowledge to the test! Match the country to its capital city.

Music

easy7 Qs

Easy Music Trivia Challenge!

Think you know music? Let's find out with this super easy trivia quiz!

Data Analysis in Practice

Quiz Intelligence

Quiz Questions

A company tests a new website design with 100 randomly selected users, comparing conversion rates to the old design. What type of statistical test is most appropriate to determine if the new design has a significantly higher conversion rate?

The correlation coefficient between study hours and exam scores for a class is found to be 0.85. Which interpretation is correct?

In a hypothesis test, the p-value is calculated as 0.03. If the significance level is set at 0.05, what is the correct conclusion?

A dataset has a mean of 50 and a standard deviation of 10. According to Chebyshev's inequality, what is the minimum proportion of data guaranteed to lie within 2.5 standard deviations of the mean?

A confidence interval for a population mean is calculated as (42.1, 49.3) from a sample. If the null hypothesis states the population mean is 45, what should you conclude at the corresponding significance level?

A researcher wants to estimate the average height of adults in a city. She uses a simple random sample of 400 people. Which factor will NOT reduce the width of a 95% confidence interval for the mean height?

A factory's production process is designed to fill bags with a mean of 500g. Quality control takes periodic samples. Which scenario describes a Type II error?

The power of a statistical test is defined as:

Expand Your Mind

Iconic Movie Quotes Quiz

80s Movie Mania: The Ultimate Trivia Gauntlet

Can You Name These Capital Cities?

Easy Music Trivia Challenge!

History's Hidden Chapters: A Scandalous Quiz

Idioms & Phrases Challenge