MPC 006 STATISTICS IN PSYCHOLOGY Solved Assignment 2021-22

MPC 006 Solved Assignment 2021-22, MPC 006 Solved Assignment 2021-22 , MPC 006 Assignment 2022 , FREE MPC 006 Assignment , IGNOU Assignments 2021-22- Gandhi National Open University had recently uploaded the assignments of this session for MASTER’S DEGREE PROGRAMME IN PSYCHOLOGY (MAPC) for the year 2021-22. Students are recommended to download their Assignments from this webpage itself. MPC 006 Solved Assignment 2021-22 They don’t need to go anywhere else when everything regarding the Assignments are available during this text only.

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MPC 006 Solved Assignment
2021-22

Course Code: MPC 006

Assignment Code: MPC 006/ASST/TMA/2021-22

Marks: 100

NOTE: All questions are compulsory.

The answers are to be written in own words. Do not copy from the course material or any other source. 

 

SECTION A

  

Answer the following question in about 1000 words (wherever applicable) each

 

1.   Describe the meaning of inferential statistics and focus on hypothesis testing.

Inferential statistics are often used to compare the differences between the treatment groups. Inferential statistics use measurements from MPC 006 Solved Assignment 2021-22 the sample of subjects in the experiment to compare the treatment groups and make generalizations about the larger population of subjects.

There are many types of inferential statistics and each is appropriate for a specific research design and sample characteristics. MPC 006 Solved Assignment 2021-22 Researchers should consult the numerous texts on experimental design and statistics to find the right statistical test for their experiment. MPC 006 Solved Assignment 2021-22 However, most inferential statistics are based on the principle that a test-statistic value is calculated on the basis of a particular formula. That value along with the degrees of freedom, a measure related to the sample size, and the rejection criteria are used to determine whether differences exist between the treatment groups. MPC 006 Solved Assignment 2021-22 The larger the sample size, the more likely a statistic is to indicate that differences exist between the treatment groups. Thus, the larger the sample of subjects, the more powerful the statistic is said to be.

Virtually all inferential statistics have an important underlying assumption. Each replication in a condition is assumed to be independent. MPC 006 Solved Assignment 2021-22 That is each value in a condition is thought to be unrelated to any other value in the sample. This assumption of independence can create a number of challenges for animal behavior researchers.

Inferential statistics helps to suggest explanations for a situation or phenomenon. It allows you to draw conclusions based on extrapolations, and is in that way fundamentally different from descriptive statistics that merely summarize the data that has actually been measured. Let us go back to our party example. MPC 006 Solved Assignment 2021-22 Say comparative statistics suggest that parties hosted by your friend Sophia are very successful (e.g., the average number of attendees and the median duration of her parties are greater than those of other parties). Your next questions may be: MPC 006 Solved Assignment 2021-22 Why are her parties so successful? Is it the food she serves, the size of her social network, the prestige of her job, the number of men or women she knows, her physical attractiveness, the alcohol she provides, or the location and size of her residence? Inferential statistics may help you answer these questions. Finding that less well-attended parties had on average fewer drinks served would suggest that your friend Sophia's drinks might be the important factor. MPC 006 Solved Assignment 2021-22 The differences in attendance and drinks served between her parties and other parties would have to be large enough to draw any conclusions.

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Note that the inferential statistics usually suggest but cannot absolutely prove an explanation or cause-and-effect relationship. MPC 006 Solved Assignment 2021-22 Inferential comes from the word infer. To infer is to conclude or judge from premises or evidence (American Heritage Dictionary) and not to prove. Often inferential statistics help to draw conclusions about an entire population by looking at only a sample of the population. MPC 006 Solved Assignment 2021-22 Inferential statistics frequently involves estimation (i.e., guessing the characteristics of a population from a sample of the population) and hypothesis testing (i.e., finding evidence for or against an explanation or theory).

Statistics describe and analyze variables. MPC 006 Solved Assignment 2021-22 We discuss measures and variables in greater detail in Chapter 4. A variable is a measured characteristic or attribute that may assume different values. A variable may be quantitative (e.g., height) or categorical (e.g., eye color). MPC 006 Solved Assignment 2021-22 Variables may be independent (the value it assumes is not affected by any other variables) or dependent (the value it assumes is pre-determined by other variables). Variables are not inherently independent or dependent. An independent variable in one statistical model may be dependent on another. MPC 006 Solved Assignment 2021-22 For example, assume that we have a statistical model to identify the cause of heart disease. Independent variables would be risk factors for heart disease: cigarettes smoked per day, drinks per day, and cholesterol level. MPC 006 Solved Assignment 2021-22 The presence of heart disease would be a dependent value. The risk factor variables affect the presence of heart disease.

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Statistical methods can analyze one variable at a time (i.e., univariate analysis) or more than one variable together at the same time (i.e., multivariate analysis). Bivariate analysis is analyzing two variables together. MPC 006 Solved Assignment 2021-22 An example of a univariate analysis would be simply looking at the death rate (mortality) in different countries. An example of a bivariate analysis would be analyzing the relationship between alcoholism and mortality.

Inferential statistics provide a quantitative method to decide if the null hypothesis (H0) should be rejected. Since H0 must be either true or false, there are only two possible correct outcomes in an inferential test; correct rejection of H0 when it is false, and retaining H0 when it is true. Therefore, there are two possible errors that can be made which have been termed Type I and Type II errors. MPC 006 Solved Assignment 2021-22 A type I error occurs when H0 is incorrectly rejected. This is commonly termed a false positive. MPC 006 Solved Assignment 2021-22A type II error occurs when H0 is retained when it is in fact false. This error is commonly termed a false negative. From the standpoint of reproducibility, knowing the probability of making a type I or type II error is essential. MPC 006 Solved Assignment 2021-22 This probability depends on experimental design and execution, and on the sample size, once again highlighting the importance of power analysis .

 

2.   The scores obtained by three groups of employees on emotional Intelligence scale are given below. Compute one way ANOVA for the same.  

 

 

Group A	23	32	54	43	56	44	32	23	22	31
Group B	35	24	32	56	43	67	87	65	56	20
Group C	38	36	22	21	20	34	22	45	32	18

 

3.   Elucidate the concept of normal distribution and normal curve (with the help of diagram) and describe the characteristics of of Normal Probability Curve. 

 

SECTION B

 

Answer the following questions in about 400 words (wherever applicable) each                                                                                                                                      

4.  Describe setting up of level of significance with a focus on its steps. 

 

5.  Compute Spearman’s rho for the following data: 

 

Data 1	32	34	45	43	22	12	36	44	41	11
Data 2	3	4	10	14	29	25	14	19	15	14

 

 

6.  Elucidate the steps involved in drawing a scatter diagram. 

 

 

 

7.  With the help of Mann Whitney U test find if significant difference exists between the scores obtained on perceived parental behaviour  obtained by male and female adolescents. 

 

	Scores on Perceived Parental behaviour
Male adolescents	11, 20, 21, 23, 24, 21, 22, 9, 15
Female adolescents	10, 19, 29, 14, 28, 31, 35, 34, 8, 5

 

 

8.  Compute Chi-square for the following data:

 

Area	Socio Economic Status
	High	Middle	Low
Rural	18	12	10
Urban	22	8	10

 

 

SECTION C

 

Answer the following in about 50 words each                                 

 

9.     Frequency distribution 

10.  Measures of central tendency 

11.  Phi coefficient 

12.  Partial correlation 

13.  Adjusted r 

14.  Nonparametric statistcs 

15.  Interval and ratio scales of measurement 

16.  Measuring skewness 

17.  Standard error 

18.  Two way ANOVA 

 

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