Examples of Interval Data
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Questions and Answers

What is the key property of the Kelvin temperature scale that makes ratios of temperature meaningful?

  • The Kelvin scale is based on the average kinetic energy of the atoms in a substance.
  • The Kelvin scale measures temperature in degrees, like the Celsius scale.
  • The Kelvin scale has a fixed starting point at the freezing point of water.
  • The Kelvin scale has a true zero point representing absolute zero, the point at which all atomic motion stops. (correct)

    • If a car is traveling at 100 km/h, and another car is traveling at 50 km/h, what is the relationship between their speeds?

  • The 100 km/h car is traveling at twice the speed of the 50 km/h car. (correct)
  • The 100 km/h car is traveling at the same speed as the 50 km/h car.
  • The 100 km/h car is traveling at three times the speed of the 50 km/h car.
  • The 100 km/h car is traveling at half the speed of the 50 km/h car.

    • Which of the following is a true statement about the relationship between a person's weight of 60 kg and another person's weight of 30 kg?

  • The 60 kg person weighs three times as much as the 30 kg person.
  • The 60 kg person weighs the same as the 30 kg person.
  • The 60 kg person weighs half as much as the 30 kg person.
  • The 60 kg person weighs twice as much as the 30 kg person. (correct)

    • What is the relationship between a distance of 20 kilometers and a distance of 10 kilometers?

    <p>The 20 km distance is twice the length of the 10 km distance.</p> Signup and view all the answers

    What is the key property of ratio scales that allows for meaningful comparisons of measurements?

    <p>Ratio scales have a true zero point that represents the complete absence of the measured quantity.</p> Signup and view all the answers

    Which of the following is a correct statement about the relationship between a room with an area of 20 square meters and a room with an area of 10 square meters?

    <p>The 20 square meter room has twice the area of the 10 square meter room.</p> Signup and view all the answers

    What is an example of a continuous variable in the text?

    <p>Voltage in an electrical circuit</p> Signup and view all the answers

    Which sampling technique involves choosing samples based on probability theory?

    <p>Simple Random sampling</p> Signup and view all the answers

    How are interest rates for loans described in the text?

    <p>Vary across a continuous range</p> Signup and view all the answers

    Which of these is an example of non-probabilistic sampling technique?

    <p>Snowball sampling</p> Signup and view all the answers

    How are stock prices described in the text?

    <p>Fluctuating continuously</p> Signup and view all the answers

    What type of variable does the speed of a car on a highway represent?

    <p>Continuous variable</p> Signup and view all the answers

    Which of the following is an example of interval data?

    <p>Height in centimeters</p> Signup and view all the answers

    What makes IQ scores a debatable example of interval data?

    <p>IQ scores have an arbitrary zero point</p> Signup and view all the answers

    In which of the following cases are equal intervals between units present, allowing for comparisons?

    <p>Temperature in degrees Celsius</p> Signup and view all the answers

    Which type of data is represented by calendar dates?

    <p>Interval data</p> Signup and view all the answers

    What characteristic allows time to be considered interval data?

    <p>Continuous scale with equal intervals between units</p> Signup and view all the answers

    Which of the following examples involves physical separation measured on a continuous scale?

    <p>$5 taxi fare</p> Signup and view all the answers

    Which of the following is not a valid example of a situation where only whole numbers are possible?

    <p>The average height of students in a classroom</p> Signup and view all the answers

    If a customer service center received 237 phone calls yesterday, which of the following statements is true?

    <p>The number of phone calls received must be a whole number.</p> Signup and view all the answers

    In a soccer game, if Team A scored 3 goals and Team B scored 2 goals, what is the total number of goals scored in the game?

    <p>5</p> Signup and view all the answers

    If a batch of 1000 manufactured products has 7 defective items, what is the maximum possible number of defective items in that batch?

    <p>1000</p> Signup and view all the answers

    If a hospital emergency room received 28 patients in an hour, which of the following statements is false?

    <p>The number of patients received could be a fraction or decimal.</p> Signup and view all the answers

    If there were 5 accidents at a particular intersection in a month, what is the minimum possible number of accidents at that intersection in the same month?

    <p>0</p> Signup and view all the answers

    Which of the following statements accurately describes purposive sampling?

    <p>The researcher uses their judgment to select participants with relevant characteristics or experiences.</p> Signup and view all the answers

    When is it appropriate to use purposive sampling?

    <p>When a random sample is not feasible or practical.</p> Signup and view all the answers

    What is the initial step in the snowball sampling process?

    <p>Starting with a small group of easily accessible participants who meet the research criteria.</p> Signup and view all the answers

    How does the snowball sampling technique expand the sample size?

    <p>By asking the initial participants to refer others who share the same characteristics.</p> Signup and view all the answers

    Which of the following statements is true about snowball sampling?

    <p>It is commonly used when the target population is difficult to identify or reach directly.</p> Signup and view all the answers

    Which of the following statements accurately describes the difference between purposive sampling and snowball sampling?

    <p>Purposive sampling relies on the researcher's judgment, while snowball sampling relies on referrals from participants.</p> Signup and view all the answers

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