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Which method provides a visual representation of the strength and direction of correlation between two variables?
  • a)
    Karl Pearson's Coefficient of Correlation.
  • b)
    Spearman's Rank Correlation.
  • c)
    Scatter Diagram.
  • d)
    Step Deviation Method.
Correct answer is option 'C'. Can you explain this answer?
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Which method provides a visual representation of the strength and dire...
A Scatter Diagram provides a visual representation of the strength and direction of correlation between two variables. It involves plotting one variable on the X-axis and the other variable on the Y-axis, resulting in a cluster of points called a scatter plot. The proximity and overall direction of the scatter points help us analyze the relationship between the two variables visually.
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Read the following passage and answer the question that follows:Happiness is considered as a kind of positive emotion which has a significant impact on the physical, cognitive and psychological mechanisms and improves human performance in different fields. This research aims to study the correlation between happiness and death anxiety in health personnel of Zareh hospital in the city of Sari. The current research is a descriptive cross-sectional and correlative study. The population includes all of the health personnel of Zareh hospital located in the city of Sari and they are 226 individuals. Two questionnaires of Oxford Happiness Questionnaire and Templer’s Death Anxiety Questionnaire were completed and surveyed by 144 individuals (97 females and 47 males) of health personnel chosen by simple random sampling. In order to analyze data, the inferential and descriptive statistics including simultaneous equation regression model, Pearson's correlation coefficient, cut-point, and t-test were used for two independent groups. Research results showed that for each one unit of increase in the variable of happiness 0.27 is decreased from the personnel’s’ death anxiety. Thus there is a significant and inverse correlation between two variables of personnel’s happiness and death anxiety. Also another part of the results showed that the difference between females’ happiness and males’ happiness was not significant.Read the following statements–Assertion (

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Which method provides a visual representation of the strength and direction of correlation between two variables?a)Karl Pearson's Coefficient of Correlation.b)Spearman's Rank Correlation.c)Scatter Diagram.d)Step Deviation Method.Correct answer is option 'C'. Can you explain this answer?
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