Correlation

In this section we explore the concept of correlation (especially using Pearson’s correlation coefficient) and how to perform one and two sample  hypothesis testing, especially to determine whether the correlation between populations is zero (in which case the populations are independent) or equal. We briefly explore alternative measures of correlation, namely Spearman’s rho and Kendall’s tau, as well as the relationship between the t-test and chi-square test for independence and the correlation between dichotomous variables.

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6 Responses to Correlation

  1. farah says:

    hello sir,
    i really hope u will help me with this problem

    i have 19 questions that use likert scale 1-4 (1 never, 2 rarely, 3sometime,4 always)
    between this 19 questions i only choose 6 questions that i can say positive (e.g question 1: do you use seat belt?) to indicate positive practice in driving so do the rest of the question. Moreover this questionnaire doesn’t have total score.

    so now, how can i analyze this data?
    my research question is
    1) there is significant different between good practice and gender
    2) there is significant different between good practice and year of driving(1: 1-2 years, 2: 3-4 years, 3: 5-6 years, 4: 7 years above)

  2. Anisah says:

    Hi! I really need your help.
    I want to know the appropriate statistical analysis used to test my hypotheses.
    Here are my hypotheses:
    Ho1: There is no significant relationship (independent) between business profile of the SMEs, to the level of awareness on climate change and related business risks.
    Ha1: There is a significant relationship (dependent) business profile of the SMEs, and the level of awareness on climate change and related business risks.
    Ho2: There is no significant relationship (independent) between the level of awareness on climate change and the related business risk, and the adaptive measures employed by the SMEs.
    Ha2: There is a significant relationship (dependent) between the level of awareness on climate change and the related business risk, and the adaptive measures employed by the SMEs.

    The content of my questionnaire
    I. Business profiles composed of:
    Type of Ownership: Sole Proprietorship, Partnership, Corporation
    Number of Years operating: 0-10 years, 11-20 years, 21-30 years, 30 years above
    Number of employees: 0-10 employees, 11- 50 employees, 51- 250 employees
    Initial Capitalization: 0-3,000,000, 3,000,001-15,000,000, 15,000,001-100,000,000

    II. Level of Awareness about Climate Change
    10 questions answerable by Aware (Rating scale: 1) and Unaware (Rating scale:0)

    III.Level of Awareness about Business Risk associated with Climate Change
    A total of 21 questions (7 risk: financial, logistics, legal and regulatory, market, people, operational and physical….3 questions each risk)
    And still answerable by Aware (Rating scale: 1) and Unaware (Rating scale:0)

    IV. Adaptive measure
    A total of 21 statements—>adaptive measures (7 aspects: financial, logistics, legal and regulatory, market, people, operational and physical….3 statements each aspect)
    Answerable by Adapted (Rating scale: 1) and Not Adapted (Rating scale:0)

    Please help me. Thank you.

    • Charles says:

      Based on a very quick and preliminary review of what you wrote, my first thought is to use Manova. The business profile is the independent variable and Level of awareness and business risk are the dependent variables.
      Charles

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