Understanding Interval Scale Characteristics

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Questions and Answers

What is the key characteristic of an interval scale that distinguishes it from other measurement scales?

  • It allows unit conversions
  • It can be used to quantify the difference between values (correct)
  • It has negative numbers
  • It has a true zero point

Which of the following is an example of an interval scale?

  • Likert scale
  • Age
  • Weight in kilograms
  • IQ test scores (correct)

What is the key distinguishing feature of a ratio scale compared to other measurement scales?

  • It has a true zero point (correct)
  • It has negative numbers
  • It lacks a true zero point
  • It cannot be used for unit conversions

Which of the following is an example of a ratio scale?

<p>Weight in kilograms (A)</p> Signup and view all the answers

Which of the following is a key characteristic of a ratio scale?

<p>It allows for orderly mathematical operations like addition, subtraction, multiplication, and division (C)</p> Signup and view all the answers

Which of the following is NOT a characteristic of an interval scale?

<p>It has a true zero point (A)</p> Signup and view all the answers

What is the main advantage of Likert scales compared to open-ended questions?

<p>Likert scales are quicker for respondents to fill out (C)</p> Signup and view all the answers

What is one potential disadvantage of using Likert scales?

<p>Respondents can get bored and lose interest, leading to invalid responses (D)</p> Signup and view all the answers

What is a potential issue with the interpretation of Likert scale items?

<p>Respondents can interpret items very differently due to vague wording (A)</p> Signup and view all the answers

What is a limitation of Likert-type questions compared to open-ended questions?

<p>Respondents sometimes have to choose the most relevant answer even if it may not accurately reflect reality (A)</p> Signup and view all the answers

The study described in the text categorized patients into which two groups based on cervical lordosis?

<p>Hypolordosis and normal lordosis (C)</p> Signup and view all the answers

What were the two main cervical postural abnormalities examined in the study?

<p>Forward head translation and cervical lordosis (D)</p> Signup and view all the answers

What is the second level of measurement scale described in the text?

<p>Ordinal scale (D)</p> Signup and view all the answers

Which characteristic of the ordinal scale is NOT mentioned in the text?

<p>Establishes the degree of variation between variables (C)</p> Signup and view all the answers

Which of the following is an example of an ordinal scale mentioned in the text?

<p>Ranking of grades in manual muscle testing (C)</p> Signup and view all the answers

What is the key characteristic of the interval scale according to the text?

<p>The difference between variables is meaningful (C)</p> Signup and view all the answers

What is the relationship between the 20-degree difference in the Celsius scale mentioned in the text?

<p>The 20-degree difference between 10 and 30 Celsius is equivalent to the difference between 50 and 70 degrees (B)</p> Signup and view all the answers

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