Reseach methods Essay Example | Topics and Well Written Essays - 500 words

Reseach methods - Essay Example Multiple form reliability refers to the application of equivalent forms of measure and correlation. This measurement tool is similar to test-retest reliability, but in this, subjects are given both forms of measure concurrently. Split half reliability reflects the correlation between the two halves in a set of items but the coefficient varies, depending on how the scale is split. Sometimes when more than one scale, dimension or factor is evaluated then split half reliability is used to check the consistency (Sekaran, 2006). Ans. Crime seriousness scales are the severity scales that judges the seriousness of the crime on the basis of weights assigned to them. There are two types of crime seriousness scales, simple rating scales and magnitude scales. Simple rating scales determine the rate of the crime on the basis of scales ranging from 1(not serious) to 9 (extremely serious). But this rating scale is unable to determine the magnitude difference between the scale scores. While magnitude scale measures the degree of seriousness of various crimes by public ranking. Selling-wolf gang index and national survey of crime severity are the two examples of magnitude scales in crime seriousness. Both these crime seriousness scales are used in criminal justice research to determine and analyze the seriousness of the crime. Crime seriousness scales not only judges the crime level but it also helps in controlling (Wilmot, 2002). Ans. Least square regression line is known as the best fitted line, least square line, regression line and least square prediction equation. It represents a mathematical model for a group of data. Generally, linear regression consists of finding the best-fitted line through the points in the scatter diagram. This line identifies the relationship between a single predictor variable X and the response variable Y, while the other predictor variables are held fixed. This