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# Forum: FAQ

Common questions in statistics and probability.

1. ### Sticky: [F.A.Q.] list of questions

Frequently Asked Questions Which statistics book should I get? How do I remove or deal with outliers? Why am I getting negative A.I.C....

• Replies: 0
• Views: 24,657
10-19-2011, 03:18 AM
1. ### [FAQ] What is a p value?

Preface The explanation below originally comes from this thread, with some modifications. It describes "conventional" null hypothesis significance...

• Replies: 0
• Views: 25,738
09-23-2013, 07:38 PM
2. ### [FAQ] How to code nicely

This section is meant to give some general help, as proper coding is vital to good science practice. There are many of types of errors and...

• Replies: 0
• Views: 7,235
09-13-2013, 05:09 PM
3. ### [FAQ] What are independent / dependent variables?

Variables A variable is an object, event, quantity, time period or basically something you are trying to measure. We can then further...

• Replies: 0
• Views: 8,084
06-22-2013, 08:10 AM
4. ### [FAQ] How do I remove or deal with outliers?

How do I remove or deal with outliers? Removing outliers can cause your data to become more normal but contrary to what is sometimes...

• Replies: 4
• Views: 82,579
10-04-2012, 08:56 AM
5. ### [FAQ] Which test should I use?

This is often a dramatically difficult task for those who have little experience in statistics. Luckily there are some good online resources to help...

• Replies: 2
• Views: 21,976
01-29-2012, 03:04 PM
6. ### [FAQ] Which statistics book should I get?

Which statistics books should I get? Many of our members have there own favorite statistics books, but the best choice for you depends on your...

• Replies: 0
• Views: 9,281
10-19-2011, 03:11 AM
7. ### [FAQ] Why am I getting negative A.I.C. scores?

Why am I getting negative A.I.C. scores? It is correct that negative A.I.C. sent up red flags for you as it may tell you that something went wrong...

• Replies: 0
• Views: 24,217
10-19-2011, 03:04 AM
8. ### [FAQ] What statistical package is best?

What statistical package is best? Unfortunately, there is no simple objective answer to this question. It all depends on your needs, skills and...

• Replies: 0
• Views: 9,374
10-19-2011, 03:03 AM
9. ### Hypothesis Testing

Coming Soon....under construction.... Null and Alternative Hypotheses Most hypothesis testing situations start with a null hypothesis which...

• Replies: 0
• Views: 15,962
03-16-2006, 08:35 AM
10. ### Computing Confidence Intervals

Before we get into examples of the confidence interval, a short comment about interpreting what a confidence interval is.....it is not to be confused...

• Replies: 0
• Views: 37,483
11-17-2005, 10:43 PM
11. ### Determining Sample Size

1. When you are asked to determine the minimum sample size required to estimate a population mean within a certain margin of error n >= ((Za +...

• Replies: 0
• Views: 35,829
11-12-2005, 09:01 AM
12. ### The Vaunted Normal Distribution

Whenever you are asked to determine the percentage of the area under the normal curve, first determine what type of question you are being asked: ...

• Replies: 0
• Views: 11,408
11-01-2005, 04:23 PM
13. ### Hypothesis Testing - Population Mean

A restaurant claims that the waiting time of customers for service is normally distributed with a mean of 3 minutes and a standard deviation of 1...

• Replies: 0
• Views: 26,070
10-31-2005, 11:20 PM

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