Basic statistical concepts
... Example : Lung capacity Under the null, T ∼ t(df = 335 + 301 − 2). P-value: P(|T| > 5.01) = P(T < −5.01) + P(T > 5.01) ...
... Example : Lung capacity Under the null, T ∼ t(df = 335 + 301 − 2). P-value: P(|T| > 5.01) = P(T < −5.01) + P(T > 5.01) ...
What`s Stat - DrJimMirabella.com
... them. Understanding the basics of statistics, as well as their limitations, are essential skills in this decisionmaking process. Statistics can be used to predict, but it is very important to understand that these predictions are not certainties. The fact that conclusions may be incorrect separates ...
... them. Understanding the basics of statistics, as well as their limitations, are essential skills in this decisionmaking process. Statistics can be used to predict, but it is very important to understand that these predictions are not certainties. The fact that conclusions may be incorrect separates ...
Home - Moodle
... step 1: Formulate the practical problem in terms of hypotheses. The null hypothesis needs to be very simple and represents the status quo, i.e. there is no difference between the processes being tested. step 2. Calculate a statistic that is a function purely of the data. All good statistics should h ...
... step 1: Formulate the practical problem in terms of hypotheses. The null hypothesis needs to be very simple and represents the status quo, i.e. there is no difference between the processes being tested. step 2. Calculate a statistic that is a function purely of the data. All good statistics should h ...
Week 7 - Massey University
... sampling distribution. Usually x ≠ A single sample mean, x, gives us information ...
... sampling distribution. Usually x ≠ A single sample mean, x, gives us information ...
Sample Size
... for ‘treatment B’ to be 60%. A study is planned to show the difference at the significance level of 1% and power of 90%. The sample size can be calculated as follows: – p1 = 0.6; q1= 1-0.6 =0.4; p2 = 0.7; q2 =1-0.7=0.3; – Z0.01 = 2.58; Z1-0.9 = 1.28. – The sample size required for each group should ...
... for ‘treatment B’ to be 60%. A study is planned to show the difference at the significance level of 1% and power of 90%. The sample size can be calculated as follows: – p1 = 0.6; q1= 1-0.6 =0.4; p2 = 0.7; q2 =1-0.7=0.3; – Z0.01 = 2.58; Z1-0.9 = 1.28. – The sample size required for each group should ...
