Descriptive statistics is the term given to the analysis of data that helps, describe, show or summarize data in a meaningful way, It doesn’t allow us to make conclusion beyond the data we have analyzed or reach the conclusion regarding any hypothesis we have made. There are generally two types of statistics:- Measures of central…
MATHEMATICAL FUNCTION 1. SUM: Sum function is used to calculate a simple total for a range of numeric cells. SYNTAX: =SUM (number1, [number2], …) EXAMPLE: Add numbers stored in cell from cell numbers D1 to D4. 2. SUM PRODUCT: Returns the sum of the products of corresponding ranges of array SYNTAX: =sum product (array1, array2, [array3],…)…
Introduction An Irish statistician, W.S. Gossett in 1908, applied this test for test for testing the significance of difference between the means of two different samples of small size. It was named ‘t-test’. The pen name of Gossette was student, hence this test is called Student’s ‘t’ test. Student t-test is also described as t-distribution…
1. Introduction to Hypothesis Testing A hypothesis, in statistics, is a statement about a population where this statement typically is represented by some specific numerical value. 2. Types of Hypotheses Hypothesis testing is formulated in terms of two hypotheses: H0: the null hypothesis H1: the alternative hypothesis. 3. Steps for Testing the Hypothesis In hypothesis testing…
Chi-Square Test The chi-square statistic is represented by χ2. The tests associated with this particular statistic are used when your variables are at the nominal and ordinal levels of measurement – that is, when your data is categorical. Briefly, chi-square tests provide a means of determining whether a set of observed frequencies deviate significantly from…
