tidocumentationstats.html Statistics V1.6, 1.7, 1.8, & 1.9 Help File

9:52 PM 03/10/2000 Site Map

Table of Contents:

• Introduction
• Features List
• Features Description
• FAQ
• Version History
• Contact Information

Introduction:

Welcome to the Statistics Help File. This file is designed to give you information pertaining to the statsV16, statsV17, statsV18, & statsV19 program for the TI-85. I hope that you enjoy this program. If you have any questions, comments, bug reports, or suggestions please feel free to contact me.

Features List:

Note: This list is by no means is all-inclusive.

• Probability Functions.
• Histogram.
• Pie Chart.
• Box & Whisker.
• List/Data Detection.
• Quit or Quit & Clear.
• 4 Variable Use.
• Optimized Algorithms & Code.
• Ability to call program from other programs.

Features Description:

• DATA Menu - This item requires that you enter the xstat variable. The best way to do this is using the [LIST] button before running the program. If you have a list with frequencies then enter the corresponding ystat variable. It is best to enter a list with frequencies using the [STAT] button and then selecting EDIT from the menu. It is advised to optimize the information for use by the program - See FAQ.
  • Graph - Selecting this option will show you the following screens in this order:
    • Box & Whisker Dimensions.
    • Box & Whisker.
    • Prompt for number of classes for Histogram. Enter the number of classes you want the Histogram to display. You might have to fiddle with this number to get it to display exactly what you want.
    • Histogram Table in the following column format:
      • Lower Class Limits.
      • Upper Class Limits.
      • Lower Class Boundaries.
      • Upper Class Boundaries.
      • Midpoint Of Class Boundaries.
      • Frequency.
      • Midpoint × Frequency.
      • Relative Class Frequency.
      • Cumulative Frequency.
    • Histogram Dimensions.
    • Histogram.
    • Frequency Polygon.
    • Ogive Dimensions.
    • Ogive.
    • Control Chart Dimensions.
    • Control Chart.
    • Control Chart Line.
    • Pie Chart.
  • Info - This option will show you the following information about your list:
    • Location of first Quartile.
    • Location of second Quartile.
    • Location of third Quartile.
    • First Quartile.
    • Second Quartile.
    • Third Quartile.
    • Minimum List Value.
    • Maximum List Value.
    • Inter-Quartile Range.
    • Range.
    • Sample Size (n).
    • Mean.
    • Sum x.
    • Sum x².
    • Sample Standard Deviation.
    • Sample Variance.
    • Population Standard Deviation.
    • Sample Coefficient Variation.
    • Two Standard Deviations.
  • Tbl - This shows a table in the following column format:
    • x.
    • Frequency.
    • x × frequency.
    • x - Mean.
    • (x - Mean)².
    • (x - Mean)² × frequency.
  • EXIT - Returns you to the main menu.
• PROB Menu - This option all has to do with probability.
  • ! - Enter in number of objects (n) and the Factorial is displayed.
  • nP&Cr - Enter in the number of objects (n) taken (r) at a time. Permutations & Combinations are calculated and displayed.
  • BINOM Menu
    • Binomial Probability - Enter sample size (n) and probability of success (p). It will then display the following.
      • Mean.
      • Standard Deviation.
      • Geometric Probability.
      • Binomial Probability Distribution.
    • Poisson Probability - Enter probability of r successes and the mean number of successes (lambda).
    • Standard Score - Enter Raw Score (x), Population Mean, & Population Standard Deviation.
    • Raw Score - Enter Standard Score (z), Population Mean, & Population Standard Deviation.
    • EXIT - Return to PROB Menu.
  • CINT Menu
    • Confidence Interval - Enter in the Mean, the critical value (z), standard deviation, & sample size (n). It will then display the interval.
    • Confidence Interval for p - Enter in sample size (n), successful trials (r), & standard score (z). It will then display the interval.
    • EXIT - Return to PROB Menu.
  • EXIT - Return to main Menu.
• UTIL Menu - The utility menu.
  • Rand D - This option allows you to create totally random data. Specify the sample size (n), the minimum value you wish to have, & the maximum value you wish to have. It will then do the next to utility options to optimize the data for use by the program. Note: This does change the values in xstat and ystat.
  • L » D - This converts a list to data if it needs to be. If you have just a list in xstat, it will see if there is reoccurring numbers in your list, count the frequencies, and store them into ystat. Thus converting it into Data. Note: This does change the values in xstat and ystat.
  • L or D - This option tells you whether your information is in list or data format. Data format is a list with frequencies.
  • EXIT - Return to main Menu.
• Quit - Quits without clearing out the variables.
• Q&C - Quits and clears out the variables. Note: xstat and ystat are not effected.

FAQ:

• How do I optimize a list/data for this program to use? Enter your lists using the [LIST] button or frequency lists using the [STAT] button. Then start the program and select [UTIL] from the main menu. Then select the L » D from this UTIL menu. This condenses the list and automatically converts it for the best use by this program.
• What variables does it use? When working with data/list it looks at xstat and ystat it will not change those unless you use a [L » D] or [Rand D] utilities. It also uses z, y, x, & v - note: lowercase.

Version History:

Help File:

• V 1.2
  • 10/06/1999 - Changed some wording.
• V 1.1
  • 9/8/1999 - Changed some wording for version 1.7.
• V 1.0
  • 8/25/1999 - WWW version of this help file created. Dates fixed.
  • 7/27/1999 - Help file created! Source is also no longer edit locked. Please send modifications that you make, details of the modification, along with your name, email, and URL to me. I will store the modifications and mention your name on my site.

Program:

• V 1.9
  • 03/10/2000 - Saved some more memory by changing a few if statements, improved speed a little. You really will not notice the difference enless your running side by side with another TI-85. Also, added some checks for the [UTIL] menu functions. Previously one would get an error if you selected some options w/o a list in xstat.
• V 1.8
  • 9/29/1999 - I fixed a small programming bug and got rid of a few more bytes. So, it should still run smooth. Bug found: It was noticed by reviewing my source that in some rare cases the Q₁ and Q₃ would be inaccurate. This problem may occur in version 1.7.
• V 1.7
  • 9/8/1999 - Just when I thought I had it perfected I found a way to take 12 bytes out of it. Still runs the same just cut and moved some things.
• V 1.6
  • 6/23/1999 - Double-checked the file for the statistics program it's running great. I even found a way to shrink it even more. I got rid of some unnecessary code and some repeat untils. It is as compact as I can get it at this point. That is until I find something else that I can modify.
  • 5/21/1999 - Completed to cover almost everything in my textbook. Binomial Probability Distribution, Poisson, Geometric, Warranty, and finding z equations. C Intervals for Population Means and for p. Project is temporarily completed. Help file to follow soon.
  • 5/20/1999 - Started all of V1.6 plus binomial features.
• V 1.5
  • 5/20/1999 - It is awesome, baby! New menu structure. Smaller program size. It will find the first, second, and third quartiles for a list or data. It does everything the list and data menu does under DATA. Highly compressed. It also has a Pie chart. Bringing graph feature like a box and whisker, histogram with definable class sizes, frequency polygon, Ogive, and pie chart. Utilities such as Random Data creation, List to Data converter, and displaying of either a list or data. probability factorials, permutations, & combinations. (More in V1.6.)
  • 5/11/1999 - Finals kept me busy. I am currently working on a smaller more efficient way to manage the menus. The first menu screen only takes up one screen and the rest are all shrunk down. Currently figuring out pie chart and way to just enter plain data and get all the information and other related information one might need. In other words combining the list and Data features. This would require of course adding an extra variable but at the same time also shrink the amount of overall memory usage and processing time. This version might be my last. The final version will include a separate help program that will explain all the features as well as other relevant information.
• V 1.4
  • 4/29/1999 - I am still working on fine tuning this little project. It's become quite large and is very interesting to say the least. I am currently working on the Binomial Probability functions.
  • 4/26/1999 - Started from scratch again. Using both ystat & xstat. Smaller than V1.3 at this, point. Code is much faster. Able to convert between List's & Data and visa versa. There is a limit of 250-list entree because we do not want to run out of memory. I am also thinking about putting in a pie graph/chart using Data features.
• V 1.3
  • 4/26/1999 - Got all sorts of things done in this version. It is fully functioning. It does have some errors they are slowly being worked out in V 1.4. It should be released be released very soon. I will also be edit-locking V 1.4 and greater. To prevent codes reuse w/o my permission. The source in future will be available upon request.
• V 1.2
  • 4/20/1999 - Finally got the random list generator into it. Made some minor modifications. Adding binomial digressions. So, the project is continuing. Working on ystat involvement.
• V 1.1
  • 4/17/1999 - Started programming from scratch using certain parts from the original. Man, I love RCL! Took me about 6 hours from start to finish. Now has Probability features !, nPr, & nCr. List created graphing and so forth now under Data menu. Screen shots finally taken. Looks great and work great too. No major bugs detected at this time. No Auto Configure in yet. Also slight name change from upper case to lower case.
• V 1.0
  • Started 4/6/1999 - Created basic structure Hist, Box, Info, Tbl, and Menu options evolved into bigger Statistics program. Getting larger and larger as I was going through the statistics book. It will eventually encompass a large part of statistical equations and functions. Currently working on "Auto Detection" of list and other enhanced user-friendly features.

Contact Information:

• Programmer:
  • Christopher MacDougald
• Electronic Mail Addresses:
  • crmacd@technologist.com
  • crmacd@mail.com
  • crmacd@hotmail.com
• Web Site:
• http://welcome.to/crmacd

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Christopher MacDougald
© 1997-2000 CRMacD
Email: crmacd@mail.com