logo Dunamath Statistical tests for means
 

Skip Navigation Links.

Skip Navigation Links. Skip Navigation Links. Skip Navigation Links. Skip Navigation Links.

 

 plot meeting

fdp gif

  
Curve 1

  
Curve 1

  

 

 

Original: English Log In Sign Up not logged
                                                                                             

Label In this page you can determine if the mean of a sample differs significantly from a specified value or if the means of two samples are statistically different. The calculator is designed to be as practical and intuitive as possible returning a straight answer. The tool can assist users to solve problems like:

1 / 3
In a company, historic data indicate that the average sale was $200 per transaction. After training your sales team, recent sales data (taken from a sample of 40 salesmen) indicates an average sale of $220, with a standard deviation of $17. Did the training work?
2 / 3
As a supervisor of an administrative process, you have developed a different method to perform a task. Now you wish to confirm statistically if the average time of the new method is better.

3 / 3
A survey with 5000 individuals reported that 1500 are left-handed (30% of the sample). Is there enough evidence that the proportion of left-handed in the population is higher than 25%?


Label Just log in or sign up and follow the steps below. You can hover over the options for additional information.

Step 1) What would you like to compare ? Select one option: 






Step 2) Enter the desired configuration of the test.

Type of Alternative Hipothesis  
Hypothesized difference    
Confidence Level    

  Step 3) Enter the sample information.

  Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Sample 6
Sample size (n)
Sample mean
Standard dev.

    

Find us on facebook icon

Remember you can access this website in your mobile phone and add it to your favorites.

Help us to develop the tool. Make a donation.

All rights reserved.