Class 9 Lecture
... • Suppose we work at the Tide factory • We know the “cleaning power” of tide detergent, exactly: It is 73 on a continuous scale. • “Cleaning Power” of Tide = 73 • You conduct a study of a competitor. You buy 50 bottles of generic detergent and observe a mean cleaning power of 65 • H0: Tide is no bet ...
... • Suppose we work at the Tide factory • We know the “cleaning power” of tide detergent, exactly: It is 73 on a continuous scale. • “Cleaning Power” of Tide = 73 • You conduct a study of a competitor. You buy 50 bottles of generic detergent and observe a mean cleaning power of 65 • H0: Tide is no bet ...
X - EE003
... • In the previous example, there was an odd number of values in the data set. • In this case it is easy to select the middle number in the data array. • When there is an even number of values in the data set, the median is obtained by taking the average of the two middle numbers. ...
... • In the previous example, there was an odd number of values in the data set. • In this case it is easy to select the middle number in the data array. • When there is an even number of values in the data set, the median is obtained by taking the average of the two middle numbers. ...
Statistics with R - Hypothesis testing and distributions
... Rejecting H0 when it is actually true is called a Type I Error. In biomedical settings it can be considered a false positive. (Null hypothesis says “nothing is happening” but we decide “there is disease”.) Step 2. Specify an acceptable level of Type I error, α, normally 0.05 or 0.01. This is the thr ...
... Rejecting H0 when it is actually true is called a Type I Error. In biomedical settings it can be considered a false positive. (Null hypothesis says “nothing is happening” but we decide “there is disease”.) Step 2. Specify an acceptable level of Type I error, α, normally 0.05 or 0.01. This is the thr ...
quartile deviation
... Quartiles are values in a given set of distribution that divide the data into four equal parts. Each set of scores has three quartiles. These values can be denoted by Q1, Q2, and Q3. First Quartile – Q1(lower quartile)- the middle number between the smallest number and the median of the data set ( ...
... Quartiles are values in a given set of distribution that divide the data into four equal parts. Each set of scores has three quartiles. These values can be denoted by Q1, Q2, and Q3. First Quartile – Q1(lower quartile)- the middle number between the smallest number and the median of the data set ( ...
Notes on Probability - Department of Applied Mathematics
... a fair coin is still a simpler experiment: both heads and tails have probability 12 . 2. What is meant by probability? For a “real” probability this is a philosophical question, with various answers, none of them completely satisfactory. (Dice can be rolled repeatedly, “empirical probability” can be ...
... a fair coin is still a simpler experiment: both heads and tails have probability 12 . 2. What is meant by probability? For a “real” probability this is a philosophical question, with various answers, none of them completely satisfactory. (Dice can be rolled repeatedly, “empirical probability” can be ...
The one-sample t test can be used whenever sample means must
... scores. The sample size figures into the test statistic above. The Z test statistic is the product of the square root of the sample size and the largest absolute difference between the empirical and theoretical CDFs. Which equal 1.057, and the Sig.( 2-tailed) equal 0.214 which is greater than 0.05, ...
... scores. The sample size figures into the test statistic above. The Z test statistic is the product of the square root of the sample size and the largest absolute difference between the empirical and theoretical CDFs. Which equal 1.057, and the Sig.( 2-tailed) equal 0.214 which is greater than 0.05, ...
Hypothesis Testing, Z distribution, Z
... random samples from a population, and then take the mean of each sample, the distribution of all of those means will have the shape of a normal (bell-shaped) distribution, regardless of the shape of the distribution of the individual values in the population from which the samples were taken. Amazin ...
... random samples from a population, and then take the mean of each sample, the distribution of all of those means will have the shape of a normal (bell-shaped) distribution, regardless of the shape of the distribution of the individual values in the population from which the samples were taken. Amazin ...
Stat 141 10/12/04 DISCRETE RANDOM VARIABLES AND
... • Poisson approximation to the Binomial Announcements: Homework 2: due Thu. October, 14, 2004, on the web. Lab 1: due Fri. October, 15, 2004, (or Monday 18) is on the web. Next Thursday lecture : Topic: Continuous Random variables, density functions, c.d.f.’s. Examples: uniform, exponential and norm ...
... • Poisson approximation to the Binomial Announcements: Homework 2: due Thu. October, 14, 2004, on the web. Lab 1: due Fri. October, 15, 2004, (or Monday 18) is on the web. Next Thursday lecture : Topic: Continuous Random variables, density functions, c.d.f.’s. Examples: uniform, exponential and norm ...
cs-171-16-17-combined-short
... • Rational agents cannot violate probability theory. ─ Acting otherwise results in irrational behavior. ...
... • Rational agents cannot violate probability theory. ─ Acting otherwise results in irrational behavior. ...
