# Statistical Analysis

Statistical analysis topics of discussion ## Sample testing when we don’t know the Population Standard Deviation

Sample Testing When We Don’t Know The Population Standard Deviation Its all well and good sample testing when we know the population standard deviation. But what about if we don’t have the ability to get production data, or we just have a small sample size? How to conduct sample testing when we don’t know the … ## Calculating Hypothesis Test Statistics

In this blog post, we will continue our Hypothesis testing example and will be Calculating hypothesis test statistics. Lets actually work with some numbers! From our 3 previous blog posts: Creating a Hypothesis For Sample Testing Deciding the Correct Hypothesis Sample testing in China- hypothesis rules We have the following: Null hypothesis, H0= All bags … ## Sample testing in China- hypothesis rules

Sample testing in China- Hypothesis Rules: In our previous blogs on sample testing, we discussed how we develop a hypothesis around a question and what the first 2 steps are in the process. You can find them here: Creating a Hypothesis For Sample Testing Deciding the Correct Hypothesis From the above, we developed the hypothesis: … ## Creating a Hypothesis For Sample Testing

In our last post, we discussed the importance of the Z score, how it helps us when sample testing components. In this blog post, we discuss creating a hypothesis for sample testing.  We should probably start at the beginning.  What is a Hypothesis Test?  A hypothesis is an idea or explanation that is proposed, the … ## How to choose a Sample for Statistical Analysis

Quality control is the ability to capture issues before they leave the factory and end up in your customers hands. Sample testing is the best technique to indicate if a shipment/ batch is acceptable or not. But how to choose a sample for statistical analysis let’s discuss how to choose components and understand if we …