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Elementary Statistics

by: Carmen Mayer

Elementary Statistics STA 013

Carmen Mayer
GPA 3.69

Rituparna Sen

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About this Document

Rituparna Sen
Class Notes
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This 1 page Class Notes was uploaded by Carmen Mayer on Tuesday September 8, 2015. The Class Notes belongs to STA 013 at University of California - Davis taught by Rituparna Sen in Fall. Since its upload, it has received 36 views. For similar materials see /class/191909/sta-013-university-of-california-davis in Statistics at University of California - Davis.


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Date Created: 09/08/15
STA 13 Midterm 2 Formula Sheet For a sample 271 1 n interquartile range IQR QU 7 QL mean E n 7 2 n 2 271 202 E17E x177 variance 32 E ATquot standard dev1ation s V 32 For a discrete random variable mean M 7 Eltzgt 7 2mm variance a2 7 EM 7 m 7 Eltz 7 mm 7 212m 7 2 standard deviation 0 V a2 Binomial Probability Distribution with parameter n and p 101 6101471441 071727 i v m I n Where q l 7 p and lt gt Mean M np and variance 02 npq I Normal Distribution NM02 fz Higguwzwar Mean M and Standard deviation 0 2 75 has a standard normal distribution Sampling Distribution of X mean M7 and variance 027 1001 7 a Con dence Interval for M Large sample E i zed2 E i zag Small sample E i tut2 Where tut2 is based on n 7 1 degree of freedom 1001 7 a Con dence Interval for p Large sample pi zed2 Mg m pi 2042 132 Where 5 Where 5 5 72 Adjusted Con dence Interval for p 5 i 2042 n4 1717 n4 7 Determination of Sample Size for 1001 7 a Con dence Interval 2 For M n lg50f For p n Ia37f Where SE is sampling error Test of Hypothesis about M or p Uzito 7 13170 U or Z 7 xPo lon Small Sample test statistic t Large Sample test statistic 2 Sign Test for a Population Median 77 test statistic z W onetailed S 11 of sample measurements greater or less than no depends on the hypothesis twotailed S max517527 5391 11 of measurements less than no and 52 11 of measurements greater than no


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