Useful tips for everyday
Is moving-average weakly stationary? The mean and variance of any MA(q ) process are finite and constant, while the autocorrelation function is finite and does…
How does sample size affect alpha and beta risk? Beta risk contrasts with alpha risk, which measures the probability that a null hypothesis is rejected…
Are Amazon ratings accurate? Although many reviews on Amazon are legitimate, more and more sketchy companies are turning to compensated Amazon reviews to inflate star…
How do you find if an array is a subset of another array? Algorithm to check if an array is a subset of another array…
How do you change stroke to pixels in Illustrator? Fortunately, this is simple to change. Choose Illustrator > Preferences > Units (Mac) or Edit >…
How to merge two datasets into one? In this example, we merge data from two data sources into one dataset and then use this dataset…
Can you set a cookie for a different domain? Setting cookies for another domain is not possible. If you want to pass data to another…
Is K-fold cross validation necessary? K-fold cross-validation is a good choice, although my experience is that it tends to show higher accuracy than when the…
How do I exclude a website from Google search results? Exclude sites from your search engine: In the Basics tab, click Advanced under Sites to…
What do angle brackets mean in vectors? inner product An angle bracket is the combination of a bra and ket (bra+ket = bracket) which represents…