Introduction to Statistics Quiz

What is the main purpose of descriptive statistics?

• To draw conclusions from a sample

• To provide an overview of the information collected

• To measure the reliability of results

• To categorize variables

Which of the following is a characteristic of qualitative variables?

• They yield numerical responses

• They yield categorical responses

• They can be counted

• They represent an amount

What type of variable is defined as having an infinite number of possible values?

• Nominal variable

• Qualitative variable

• Continuous variable

• Discrete variable

Which level of measurement involves ordered values with equal distances between them?

• Nominal Level

• Ordinal Level

• Interval Level

• Ratio Level

What is a key feature of probability samples?

• They do not require a sampling frame

• They are selected haphazardly

• They involve randomization

• They are always biased

In systematic random sampling, how is the first individual selected?

• By choosing the last individual in the population

• By selecting the first individual in the population

• By random number between 1 to k

• By using a fixed interval

What is the main characteristic of cluster sampling?

• It selects individuals randomly from the entire population

• It involves selecting groups that are homogeneous within and heterogeneous between

• It requires a complete listing of the population

• It is a type of non-probability sampling

Which of the following is NOT a method of collecting primary data?

• Experiments

• Published reports

• Direct personal interviews

• Focus groups

What is the purpose of data collection?

• To draw conclusions without evidence

• To categorize variables

• To gather and measure information systematically

• To analyze existing data

Which sampling technique relies on the researcher's judgment?

• Stratified Sampling

• Purposive Sampling

• Cluster Sampling

• Simple Random Sampling