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12 Degrees of Freedom: "...trundling around the edges of European ...

"You weren't entitled to the status of refugee, precisely because you were a gypsy. And that's the crux of the problem." Because the Italian authorities decided that nomadism was their natural condition, they made no steps to settle the new migrants in houses like other refugees, but instead created camps for them. The press still calls these campi nomadi, nomad camps. It was a way to sidestep the challenge of integrating the Roma into local communities. The result was ghettoes. And they did what ghettoes always do: they prevented their inmates from developing in step with the rest of [more...]

Date: 2010-10-04 13:04:00

Blog posts (14) | Videos (15)

Minitab error: Zero or negative degrees of freedom

Calculating Degrees of Freedom in order to determine my K value, neoth, Measurement Uncertainty (MU), 4, 25th September 2010 08:23 PM. Degrees of freedom in a 2 sample t test, sriram_govi, Six Sigma, 5, 26th April 2010 07:00 PM [more...]

Date: 2010-07-19 16:46:00

Essay title - Systemisingis Empathising Emotions - Eyes in the Mind

In our experiment there were 96 degrees of freedom. If p<0.01 we conclude that the test is significant at the 1% level. For ACCURACY there was a main effect of condition:F(1,96) = 198.233, p < 0.001 ... Finally, it was also concluded from the t-test that there was no significant difference between the EQ scores of males and the EQ scores of females. Given the EQ score is viewed in psychology as an accurate representation of a normal adult's ability to empathise, [more...]

Date: 2010-10-13 16:06:23

A Monte Carlo Study of Seven Homogeneity of Variance Tests

PASW) uses the Levene Test to test for homogeneity of variance prior to conducting tests of the equality of means in the t-test and One-way ANOVA (Oladejo and. Adetunde, 2009; Zeng et al., 2010; Mazahreh et al.,. 2009). A question arose as to whether the .... the upper critical value of the F-distribution with k–1 and N–k degrees of freedom at a significance level of α. The modified Levene test: The modified Levene test is nearly identical to the original Levene test. The [more...]

Date: 2010-10-08 18:33:55

Leptospirosis in the Tropics: When Prevention Doesn't Easily Sell ...

antimicrobial therapies (group 1) and rodenticides. (group 2) in each of the three countries under study. The degrees of freedom (df) in an unpaired two- group t-test when the group (sample or population) size. <30 is derived from: [more...]

Date: 2010-10-10 09:17:46

12 Degrees of Freedom: ...and an e-mail address into the genome

But the DNA didn't originate in any bacteria: instead, scientists pieced it together from bottled chemicals. The process they recently developed for doing this is the first to yield synthetic cells that are capable of surviving. Some of the bacterial cells that Ma is working with will fuse together in the solution, engulfing the synthetic genome and then replicating and living under its control. Conventional genetic engineering is a lengthy process in which genes are altered one by one, often over successive generations of organisms. That makes radically changing a genome a daunting [more...]

Date: 2010-08-31 12:09:00

Spiritual Practice is Spirit Lived. ~ Andrew Cohen | elephant journal

It obviously goes without saying that this is easier said than done. Freedom is letting go and letting go is freedom. In truth, it doesn’t take effort. It only requires you to love God or Spirit more than you love yourself. Creating Heaven on Earth is another matter altogether. It requires enormous effort and a long-term commitment that means forever. It also requires practice, because all truly great creative accomplishments require endless practice. So how much practice are we actually doing to ensure our own development? How deeply have we realized the importance our own higher [more...]

Date: 2010-10-13 15:00:55

Did the Free Market Burn Down the House? — Mises Economics Blog

A strange argument emerged overnight that illustrates how little even informed people understand about the market economy and its implications. This time the debate centers on a interesting case of a man in rural Tennessee who did not pay his fire-services fee, so the fire department let his house burn down. Here is the news report.You can see that this incident is being used to attack libertarianism.National Review’s Daniel Foster jumps in to say that this is why conservatives need to curb their enthusiasm for the market economy. A colleague in the “anarcho-capitalist” camp stuck his [more...]

Date: 2010-10-06 13:38:27

Excel Master Series Blog: Use the Excel t Test To Find Out What ...

The t Test that can be applied to two samples with unequal sizes and unequal variances determines whether the means of both samples are the same.  In other words, this test evaluates within a specified degree of certainty whether the measured difference between the meaqns is real or could have occurred merely by chance. Before we start discussing this specific test in detail, The t-test needs to be generally explained. The basic question to be answered is: The t test is a statistics test generally used to test whether means of populations are different. In the t test, a t value is [more...]

Date: 2010-08-22 18:33:00

» Court Denies Access to Fannie/Freddie Political Records - Big ...

The courts have established a four-pronged test to determine whether or not a federal agency has “control” over records: (1) the intent of the document’s creator to retain or relinquish control over the records; (2) the ability of the agency to use and dispose of the record as it sees fit; (3) the extent to which agency personnel have read or relied upon the document; and (4) the degree to which the document was integrated into the agency’s record system or files. The Court ruled that the first two factors weigh in favor of Judicial Watch and the latter two weigh in favor of [more...]

Date: 2010-10-13 16:32:46


In fact it is a whole family of t-distributions. As n gets bigger, t-distribution approximates to normal distribution. t-distribution is wider than normal distribution. 95% confidence interval reflects greater degree of uncertainty in having to approximate the population Standard Deviation by that of the sample. EXAMPLE Mean training time for population = 10 days. Sample mean for 8 women = 9 days. Sample Standard Deviation = 2 days. To approximate population Standard Deviation by a sample divide the sum of squares by n – 1: STEM = 2/(8)^1/2 = 0.71 Null Hypothesis: There is no difference [more...]

Date: 2010-08-03 06:59:40

Simple Linear Regression with Minitab « Radheika[dot]Com

The t-values (here “T”) test the hypotheses that the corresponding population parameters are 0. If you wish to test a nonzero value, subtract it from the coefficient in the regression output window and divide by the coefficient’s s.e. (Use a calculator for this.) Similarly, if you want confidence intervals, use the coefficient plus or minus the product of its s.e. with a t-value for the desired confidence level and 12 degrees of freedom. (Use a calculator for this.) To plot the regression line on the scatterplot, redo the scatterplot but this time pick With Regression in the first [more...]

Date: 2010-10-13 08:35:18

Minitab/ multiple regression « Radheika[dot]Com

The mean squares are given by the SS (sums of squares) divided by the degrees of freedom. So, what are the sums of squares? The sums of squares are what regression is all about - you might have heard of regression being called OLS (ordinary least squares) regression - these are the squares that make the sums of squares. The sums of squares are short for sums of squared deviation from the regression. The first sum of squares we have are the total sum of squares. These are calculated by finding the residual (difference) between each value and the mean, squaring it, and then adding them up. The [more...]

Date: 2010-10-13 08:32:15

Computational Organic Chemistry » Assigning a computed NMR ...

Determine the probability of this error using the Student’s t test (with mean, standard deviation, and degrees of freedom as found using their database of over 1700 13C and over 1700 1H chemical shifts). Lastly, the DP4 probability is computed as the product of these probabilities divided by the sum of the product of the probabilities over all possible diastereomers. This process is not particularly difficult and Goodman provides a Java applet to perform the DP4 computation for you! In the paper Smith and Goodman demonstrate that in identifying structures for a broad range of natural [more...]

Date: 2010-09-28 14:36:20

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