Discriminant Analysis Definition
5.1.1 What are Discriminant Analysis and Logistic Regression
Definition of Discriminant Analysis
The original dichotomous discriminant analysis was found by Sir Ronald Fisher in 1936. Discriminant analysis is a statistical method of analysis, which is used to predict categorical variables based on metric variables. It is used to determine particular classification or a group an item, characteristics and primary features.
Discriminant analysis is a classification problem, in which two or more groups or clusters are referred as priori (which is formed or known beforehand without any analysis or examination). New observations are classified into one of the known populations based on the measured characteristics.
It varies from group building
…show more content…
Independence: The subjects are independently sampled.
4. Normality: The data are multivariate normally distributed.
Step 5: Computing discriminant functions: Rule for classification of the new object into one of the known populations.
Step 6: Cross validation to evaluate misclassification probabilities: Statistical procedures help in performing diagnostic procedures to assess the efficacy of the discriminant analysis. Cross validation is used to assess the classification probability. These rules involve aspects such as “what is the cost of misclassification?", this could come up in a medical study.
Step 7: Classifying observations with unknown group memberships: The following procedure belongs to one of the populations which has been considered. If there is a study which involves observing insects, A and B, and the classified insect belongs to a species C, this means it is being misclassified as it belonging to either A or B.
Advantages of Discriminant analysis
Discriminant analysis has numerous benefits to offer as a statistical tool and it is also a bit similar to regression analysis. It has proven to give researchers, analysts and businessmen with precise information to understand observations with more
…show more content…
The discriminant function is a linear variate of metric measurements of two or more independent variables, which are used to explain or forecast a dependent variable.
The only difference is that discriminant analysis is apt for researching problems in, which the dependent variable is nominal or nonmetric (categorical). In regression it is utilised when the dependent variable is considered to be metric.
Logistic regression is a variant of regression, which has many similarities except for the type of dependent variable. Discriminant analysis can also be compared to “reversing” multivariate analysis of variance also known as (MANOVA).
In discriminant analysis, the dependent variable is nominal or non-metric (categorical), while the independent variables are metric. The contradictory is true of MANOVA, involves metric dependent variables and categorical independent variables. Both of the statistical tools apply the same statistical measures overall in the
Nt1310 Unit 4 Component Analysis
331 Words | 2 PagesMultilinear principal component analysis (MPCA) is a mathematical procedure that uses multiple orthogonal transformations to convert a set of multidimensional objects into another set of multidimensional objects of lower dimensions. There is one orthogonal (linear) transformation for each dimension (mode); hence multilinear. This transformation aims to capture as high a variance as possible, accounting for as much of the variability in the data as possible, subject to the constraint of mode-wise orthogonality. MPCA is a multilinear extension of principal component analysis (PCA).
Nt1310 Unit 4 Test Paper
600 Words | 3 Pageset us assume that $A_{ij}$ is the power received (expressed in dBm)by the frequency band $F_{i}$ at the time $T_{j}$. We have represented the data collected during our spectrum measurement by using a N $ imes$ M matrix designed by L. The matrix L is defined as: %%%%%%%%%%%%%%%%%%%%%%%%%% [ L = [A(F_i,T_j)]= egin{bmatrix}
Nt1310 Unit 5 Essay
491 Words | 2 PagesEach of these methods can be easily used and are important because they can be used classify IDPS
Pt1420 Unit 4 Paper
509 Words | 3 PagesI have seen both of these terms mentioned in numerous research articles but I never understood why researchers applied the technique to their study. Part II We will review your postings and answer your questions and clarify/correct anything that needs correcting. Part III Create one multiple choice test question, either from your own topic or one of your classmate 's topics.
Psy 350 Experimental Statistics Essay
412 Words | 2 Pages5. How will you operationalize your DV? What will you use to measure whether the outcome was different for your IV groups? I will operationalize the Dependent variable by observing their actions during the experiment. 6.
Greta's Confirmation Bias
346 Words | 2 PagesIn order to develop a standardized test that is valid and reliable, the
How Did Ww2 Contribute To The Liberation Of Australian Women
809 Words | 4 PagesDue to both the implementation
Psy 315 Week 3 Study
676 Words | 3 Pagesinvestigating the difference in results of using two different types of plant food Ans: identification of Relationship because trying to identify difference between two types of food. h. calculating the mean score on a final exam for a class of 100 students Ans: data reduction because trying to reduce everything and shows meaningful part. i. studying whether exposure to a certain type of chemical results in more frequent cancer diagnoses Ans: Inference because it tries to conclude how certain types of chemical results in more frequent cancer diagnoses. 3. Tell which type of sampling is used (random, cluster, systematic, convenience, and stratified and give clear reasons to support your answer.
Occupational Therapy: Annotated Bibliography
356 Words | 2 PagesHomogenous groups are another factor that deterred researchers to deem this method
Case Study: Griggs V. Duke Power Co.
260 Words | 2 PagesIn terms or conditions of employment, disparate treatment occurs when an employee is intentionally treated differently by the employer due to race, color, religion, gender or national origin. Likewise, disparate impact is the discriminatory effect of apparently neutral employment criteria or selection devices. Further, disparate impact does not require intention to discriminate on the part of the employer. This type of impact disproportionately disqualifies employees based on race, color, sex, religion or national origin. The issue that surrounds the Griggs v. Duke Power Co is whether or not there’s a violation of Title VII.
Similarities Between French Revolution And American Revolution
951 Words | 4 PagesAlso, the differences are shown
Identity In Portrait Photography Essay
2031 Words | 9 PagesA set of characteristics by which something is familiar is an identity. People are able to recognize a chair by its flat surface and the legs that support it, however, humans adapt to this identity. For instance, there may be only one leg, but that does not stop it from being identified as a chair. When talking about humans the basic idea of identity tends to become perplexing. This does not stop oneself from identifying various people.
Political Influences On Fashion
870 Words | 4 PagesSue Taylor states that there are two types of classification
Differentiation Theory In Learning
1018 Words | 5 PagesDifferentiation, with respect to instruction, means tailoring it to meet individual needs of the students. Teachers can differentiate content, process, products, or the learning environment, the use of ongoing assessment and flexible grouping makes this a successful approach to instruction. Teachers differentiate the four classroom elements based on student readiness, interest, or learning profile. (Tomlinson 2000). Differentiated instruction can be known as an organizing framework in teaching and learning which calls for a major restructuring in the classroom and syllabus, if done in the proper way, its benefits will transgress the costs.
More about Discriminant Analysis Definition
Nt1310 Unit 4 Component Analysis
331 Words | 2 PagesNt1310 Unit 4 Test Paper
600 Words | 3 PagesNt1310 Unit 5 Essay
491 Words | 2 PagesPt1420 Unit 4 Paper
509 Words | 3 PagesPsy 350 Experimental Statistics Essay
412 Words | 2 PagesGreta's Confirmation Bias
346 Words | 2 PagesHow Did Ww2 Contribute To The Liberation Of Australian Women
809 Words | 4 PagesPsy 315 Week 3 Study
676 Words | 3 PagesOccupational Therapy: Annotated Bibliography
356 Words | 2 PagesCase Study: Griggs V. Duke Power Co.
260 Words | 2 PagesPros And Cons Of The Indian Removal Act
1004 Words | 5 PagesSimilarities Between French Revolution And American Revolution
951 Words | 4 PagesIdentity In Portrait Photography Essay
2031 Words | 9 PagesPolitical Influences On Fashion
870 Words | 4 PagesDifferentiation Theory In Learning
1018 Words | 5 Pages