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. (B)</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. (D)</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. (D)</p> Signup and view all the answers

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

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

Which sampling technique involves choosing samples based on probability theory?

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

How are interest rates for loans described in the text?

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

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

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

How are stock prices described in the text?

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

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

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

Which of the following is an example of interval data?

<p>Height in centimeters (B)</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 (C)</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 (A)</p> Signup and view all the answers

Which type of data is represented by calendar dates?

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

What characteristic allows time to be considered interval data?

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

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

<p>$5 taxi fare (D)</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 (B)</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. (A)</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 (C)</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 (C)</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. (B)</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 (C)</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. (C)</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. (D)</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. (B)</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. (B)</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. (A)</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. (A)</p> Signup and view all the answers

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