SOCR Courses 2007 2008 Stat13 1 Lab3 - Revision history

WikiSysop: /* Distribution Comparision */

2014-03-06T16:07:15Z

‎Distribution Comparision

IvoDinov at 04:22, 1 April 2008

2008-04-01T04:22:38Z

Jenny at 19:21, 6 November 2007

2007-11-06T19:21:39Z

Jenny: New page: == Stats 13.1 - Laboratory Activity 3== You can access the applet for any of the distributions at www.socr.ucla.edu under the ”Distributions” ta...

2007-11-05T20:01:22Z

New page: == Stats 13.1 - Laboratory Activity 3== You can access the applet for any of the distributions at www.socr.ucla.edu under the ”Distributions” ta...

New page

== [[SOCR_Courses_2007_2008_Stat13_1 | Stats 13.1]] - Laboratory Activity 3==

You can access the applet for any of the distributions at www.socr.ucla.edu under
the ”Distributions” tab. Use SOCR to graph the following distributions and answer the
questions below. Also, comment on the shape of each one of these distributions.

===Binomial Distribution Activity ===

====1==== X~Binom(10,.5)
Find: P(x = 3),E(X), sd(X) and verify them with the formulas discussed in class.
====2==== X~Binom(10,.1)
Find and verify:

P(1 <= x <= 3)

====3==== X~Binom(10,.9)
Find and verify:

P(5 < x < 8)

P(x < 8)

P(x <= 7)

P(x >= 9)

====4==== X~Binom(30,.1)

Find and verify:

P(x > 2)

===Distribution Comparision===

Graph and comment on the shape of binomial with n = 20,p = 0.1 and n = 20,p = 0.9
(take a snapshot of each). Now, keep n = 20 but change p = 0.45. How about when n =
80,p = 0.1? Take another snapshot. What changes do you observe in the distribution as
the parameters change? Watch both the change in shape as well as the changing number
on the x and y axes.

{|border="1" cellpadding="20"
|Smaller n
|Larger n
|Smaller p
|Larger p
|-
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|}

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 ===Binomial Distribution Activity ===
-====1==== X~Binom(10,.5)
+==== 1 ====
 Find: P(x = 3),E(X), sd(X) and verify them with the formulas discussed in class.
-====2==== X~Binom(10,.1)
+==== 2 ====
 Find and verify:
 P(1 <= x <= 3)
-====3==== X~Binom(10,.9)
+==== 3 ====
 Find and verify: