30 Questions
What is the key property of the Kelvin temperature scale that makes ratios of temperature meaningful?
The Kelvin scale has a true zero point representing absolute zero, the point at which all atomic motion stops.
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.
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 twice as much as the 30 kg person.
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.
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.
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.
What is an example of a continuous variable in the text?
Voltage in an electrical circuit
Which sampling technique involves choosing samples based on probability theory?
Simple Random sampling
How are interest rates for loans described in the text?
Vary across a continuous range
Which of these is an example of non-probabilistic sampling technique?
Snowball sampling
How are stock prices described in the text?
Fluctuating continuously
What type of variable does the speed of a car on a highway represent?
Continuous variable
Which of the following is an example of interval data?
Height in centimeters
What makes IQ scores a debatable example of interval data?
IQ scores have an arbitrary zero point
In which of the following cases are equal intervals between units present, allowing for comparisons?
Temperature in degrees Celsius
Which type of data is represented by calendar dates?
Interval data
What characteristic allows time to be considered interval data?
Continuous scale with equal intervals between units
Which of the following examples involves physical separation measured on a continuous scale?
$5 taxi fare
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
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.
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
If a batch of 1000 manufactured products has 7 defective items, what is the maximum possible number of defective items in that batch?
1000
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.
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
Which of the following statements accurately describes purposive sampling?
The researcher uses their judgment to select participants with relevant characteristics or experiences.
When is it appropriate to use purposive sampling?
When a random sample is not feasible or practical.
What is the initial step in the snowball sampling process?
Starting with a small group of easily accessible participants who meet the research criteria.
How does the snowball sampling technique expand the sample size?
By asking the initial participants to refer others who share the same characteristics.
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.
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.
Learn about common examples of interval data, such as temperature (Celsius or Fahrenheit), year of birth, and IQ scores. Understand how intervals between values allow for meaningful comparisons and calculations.
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