Weblinks, useful sites, & Handouts

Math 151 , Spring '13  Hit reload to get most current version

APPLETS DON'T RUN?  Things to try, where they work...
Usually it's a  Java problem:  No Java installed, or Firefox thinks the version is a risk and someone's disabled it.  Or Firefox is refusing to use it even if it's enabled, because it's too old.

PDF files won't open?  Here's one to try:  Normal probability practice
  some suggestions

David S. Moore textbooks have websites. Mostly we'll use the Statistical Applets. 

The disk in your book (if you have one) is basically "the" website, and you can use it usually instead of going to the web.  See me if you don't have one and need it.

Website: the site for Basic Practice of Statistics 5th ed. is  http://bcs.whfreeman.com/bps5e  .

Under Student Resources or Student tools,  choose "Statistical Applets."
I know we'll use these applets:
Mean & Median
,
One Variable Statistical Calculator
Normal Density,

Correlation/Regression,
Simple Random Sample: (p. 207)  
Probability For a fair coin, leave probability at .5.  It accumulates tosses until you hit Reset.
Also Confidence interval
  P-value of a test of significance

_______________________________________________

Excel spreadsheets: (also in computer labs: if there is a folder labeled Class Material, in it, in Math151-Moore5e. )
 
TableA(Normal),    TableC(t distribution)

   (What happens in normal distribution tails, beyond z = 3.49?  NormalTails.htm)
 
Some of a Random Number table: TableB (random numbers)

Regression and correlation:
    Regression, least squares
    Slope of the regression line
    Residuals
    R-squared  
Sample means:
Normal and Xbar, compared
ConfidenceInterval
Normal and t compared
t-procedures
two-sample t procedures (Ch. 18)

HANDOUTS (not all handouts are web-able.  Look in the white folder outside my door for paper.)
SPSS handouts from SPSS page   A few Datasets there also.

Density handout   and Solutions!
Normal templates
 Normal probability practice 

Other links:
Least squares best fit line:
   http://www.seeingstatistics.com/seeing1999/intro/why3.html   (this line is "pegged" at the (xbar, ybar) point) 

Sampling dist; Central limit th.   Rice U. Applet 
     (do Sample: Animated sample; Distribution of means: n =5, then n = 25. Do Sample 5, 1000, 10000 after idea is clear.)
  Worksheet to go with this applet:  Behavior of Samples and their Means  (First 6 pages are detailed worksheet; 7th is "separate" summary sheet for means and std. dev.'s)   



APPLETS DON'T RUN?  Things to try, where they work...
Usually it's a  Java problem:  No Java installed (I think we've got all those fixed), or Firefox thinks the version is a risk and someone's disabled it.  As of Jan. 18, there's a huge flap about Java being a big risk in general (It isn't a risk from trusted Applets, and the ones I'm sending you to I trust, but Homeland Security doesn't.)   Anything older than Java(TM) Platform SE 7  U11  10.11.2.21  may cause a problem on any browser.  At the very least, you'll probably be explicitly asked if you want to Run the applet.

Java is on the computer and up to date?  You may still have problems with Firefox (Mozilla) blocking your applet.   This link will take you to Mozilla instructions for running any one particular Java applet.  http://mzl.la/VYiQ64 , "customized for your op. system and language."  Scroll down to "How to use Java if it's been blocked" section, and read down from there.   For my computer it tells me this:  if there's a gray window that offers you Click here to activate...the plugin, do that.  If not, check the address bar;  at the very left there may be an icon of a Lego brick (red or blue); click on that and get a pulldown menu where you can activate Java for that page.

I don't know what other browsers are doing at this time.

Main computers--I don't know the status yet.
Macintoshes (Safari, Chrome) in Macmillan 110 may or may not be willing to run an applet.

Elsewhere, Internet Explorer doesn't seem to  complain about an old Java
(I think)
Library: 
you may be able to download and  update Java directly (see "your personal computer" below)
Mac 101:
Only an administrator can update Java. 
   What you can do (maybe):
In the Firefox menu, in the Firefox menu, find Add-ons (may be under Tools menu). Then Plugins:  Find the  Java(TM) Platform SE 6  U31 (or 29 or whatever) plugin.  It's probably been Disabled.  Enable it.  (Only an administrator can actually update the Java program).  You'll have to close and reopen Firefox, but then the Applets should run (till someone else disables the Java) I believe all the machines have some version of Java installed.  If it's been Blocked by Mozilla,  see just above.

Your personal computer: 
  Firefox:   find the menu bar,  find Add-ons (may be under Tools menu). Then Plugins:  Find the  Java(TM) Platform SE 6  U31 (or SE 7 U 10 or whatever) plugin. If it's not there at all, you'll need to install it new. If you haven't updated in the last week,  you should update it anyhow. 
At the bottom of the Plug-ins list, or above it (depending on version) is "Find Updates" or "Check to see if plugins are up to date" or something like that.  Choose that.  You'll go to a webpage with your plugins listed and buttons to get updates.

The "Java (TM) Platform SE 6 Uxx" (or something like)  button  takes you to the Java website where you can download the new one.  (It's V. 7 Update 11 10.11.2.21, as of today)    You can also get there via http://java.com/en/download/index.jsp Click on a link to download.

On my XP machine, it asked (last April)  Would you like to save this file.  (Yes, Save File)  Save it to the desktop or somewhere you can find it, if it asks you .  After downloading the file, you need to run it:  In the small Downloads (Firefox) window,   double-click on the file name.  (Or find it on the desktop and do the same.)

It will ask you if you're sure, and continue through a sequence of steps and windows.  For me, it suggested the Ask toolbar add-in (which I've tried and found annoying)--uncheck the little square box in the middle of that window if you don't want it.  Then continue with the installing.  Eventually it will finish.

To connect it up with Firefox, close and reopen Firefox:  it may prompt you to accept the new Java.  If it doesn't, you should be able to go to Add-ons, Plug-ins, and enable it from there, if it didn't do it automatically.

Java is on and up to date?  You may still have problems with Mozilla blocking your applet, due to the new security issues.   This link will take you to Mozilla instructions for running any one particular Java applet  http://mzl.la/VYiQ64 , "customized for your op. system and language."  Scroll down to "How to use Java if it's been blocked" section, and read down from there.   For my computer it tells me  this:  if there's a gray window that offers you Click here to activate...the plugin, do that.  If not, check the address bar;  at the very left there may be an icon of a Lego brick (red or blue); click on that and get a pulldown menu where you can activate Java for that page.

- - - - - - - - -
It's not just us suffering:
 http://blogs.computerworld.com/cybercrime-and-hacking/21664/understanding-new-security-java-7-update-11
documents how badly computers are coping with this.

http://www.computerworld.com/s/article/9235997/Experts_prod_Oracle_to_fix_broken_Java_security



PDF files won't open?  Here's one to try:  Normal probability practice
Adobe Reader
must be installed on the computer.  It should be on all of the lab computers, and on your own computer.  Email me if it's missing from a lab computer, and install it (Google, find, follow instructions) on your own. 
Different browsers and different versions/options of them handle PDF's differently.
     So try a different browser, if it's handy.
If the browser gives you the option of Save or Open: 
If Open doesn't work, Save it, and then try opening the Saved file.  If it won't open, likely Adobe Reader isn't installed or is broken and needs reinstalling.
If the browser gives you Nothing when you click the link:  Poke around in menus or at the bottom of the window; see if you can find an option that will allow you to "Download a PDF" or "Save a PDF".  It's in different places in different browsers.
If the browser gives a blank page, but the name of the file (ending with .pdf)  shows up in the window where the page file name appears, then Saving the Page as a pdf will likely work; you can then open the saved file.

Chrome seems to be the worst offender.  Ideally, when you click on the link, it should automatically put a little button with the PDF file name on the lower left of the browser, which you can click to open the file.  It works that way on the Macs in Macmillan 110.  On the PC's in 101 that have Chrome, it doesn't work automatically.  But if you Right-click the link, you can "Save the link..." Do that and the downloaded file will be saved wherever you put it, and the button with the file name appears on the lower left of the browser.  You can click that to open the file.

Please let me know if you find a solution on a particular browser, what you did....
Thanks.



Sievers home  Math151-Sp13/Weblinks.htm  4pm 3/22/13

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