Examples of Interval Data

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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?

The 20 km distance is twice the length of the 10 km distance. (B) Signup and view all the answers

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

Ratio scales have a true zero point that represents the complete absence of the measured quantity. (D) 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?

The 20 square meter room has twice the area of the 10 square meter room. (D) Signup and view all the answers

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

Voltage in an electrical circuit (C) Signup and view all the answers

Which sampling technique involves choosing samples based on probability theory?

Simple Random sampling (A) Signup and view all the answers

How are interest rates for loans described in the text?

Vary across a continuous range (B) Signup and view all the answers

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

Snowball sampling (B) Signup and view all the answers

How are stock prices described in the text?

Fluctuating continuously (A) Signup and view all the answers

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

Continuous variable (A) Signup and view all the answers

Which of the following is an example of interval data?

Height in centimeters (B) Signup and view all the answers

What makes IQ scores a debatable example of interval data?

IQ scores have an arbitrary zero point (C) Signup and view all the answers

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

Temperature in degrees Celsius (A) Signup and view all the answers

Which type of data is represented by calendar dates?

Interval data (B) Signup and view all the answers

What characteristic allows time to be considered interval data?

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

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

$5 taxi fare (D) Signup and view all the answers

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

The average height of students in a classroom (B) Signup and view all the answers

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

The number of phone calls received must be a whole number. (A) 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?

5 (C) 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?

1000 (C) Signup and view all the answers

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

The number of patients received could be a fraction or decimal. (B) 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?

0 (C) Signup and view all the answers

Which of the following statements accurately describes purposive sampling?

The researcher uses their judgment to select participants with relevant characteristics or experiences. (C) Signup and view all the answers

When is it appropriate to use purposive sampling?

When a random sample is not feasible or practical. (D) Signup and view all the answers

What is the initial step in the snowball sampling process?

Starting with a small group of easily accessible participants who meet the research criteria. (B) Signup and view all the answers

How does the snowball sampling technique expand the sample size?

By asking the initial participants to refer others who share the same characteristics. (B) Signup and view all the answers

Which of the following statements is true about snowball sampling?

It is commonly used when the target population is difficult to identify or reach directly. (A) Signup and view all the answers

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

Purposive sampling relies on the researcher's judgment, while snowball sampling relies on referrals from participants. (A) Signup and view all the answers