Statistics lil bro

What is a variable?

• A fixed value

• A characteristic that can take different values

• A statistical method

• A type of data collection

Which of the following is an example of nominal data?

• Temperature in Celsius

• Age in years

• Favorite color

• Height in centimeters

Which type of variable is represented by the data set {1, 2, 3, 4, 5}?

• Continuous

• Categorical

• Discrete

• Ordinal

In a survey, participants are asked to rate their satisfaction on a scale of 1 to 5. This type of data is:

• Nominal

• Ordinal

• Interval

• Ratio

What is the primary goal of sampling in research?

• To gather data from an entire population

• To minimize costs and time

• To select a representative subset of a population

• To ensure all data points are identical

Which of the following is a non-probability sampling technique?

• Simple random sampling

• Stratified sampling

• Convenience sampling

• Systematic sampling

When conducting a survey, which method is likely to yield the most reliable data?

• Online surveys only

• Face-to-face interviews only

• A mix of online and face-to-face methods

• Telephone interviews only

A parameter is defined as:

• A characteristic of a sample

• A characteristic of a population

• A numerical value calculated from data

• An estimate derived from a survey

Which of the following is an example of a statistic?

• The average height of all adults in a country

• The average score of a sample of 100 students

• The total number of students in a school

• The percentage of all voters in an election

Why is sample size important in determining the reliability of statistical conclusions?

• Larger samples always provide a perfect estimate

• Larger samples reduce the margin of error

• Smaller samples are more cost-effective

• Sample size has no effect on reliability