re 15 Statistical Treatment of Data Quiz

What is the primary purpose of using statistical tools in research?

• To create graphs

• To arrive at accurate interpretations

• To diagnose problems

• To collect data

What does the term 'data' refer to?

• A type of analysis

• A statistical model

• Multiple pieces of information

• A single piece of information

Which of the following is NOT a type of central tendency?

• Median

• Variance

• Mean

• Mode

What is the definition of 'dispersion' in statistics?

• The spread of values around the central tendency

• The frequency of individual values

• The total number of observations

• The average of a set of values

How is the mean calculated?

• By finding the middle value

• By adding all values and dividing by the number of values

• By identifying the most frequent value

• By calculating the range

What does the mode represent in a data set?

• The average value

• The middle value

• The most frequently occurring value

• The highest value

Which measure of dispersion is calculated by subtracting the lowest value from the highest value?

• Standard deviation

• Variance

• Range

• Mean

What type of data is characterized by non-numeric values?

• Qualitative data

• Discrete data

• Continuous data

• Quantitative data

Which of the following is an example of discrete data?

• Height of students

• Temperature readings

• Time taken to complete a task

• Number of students in a class

What is the purpose of inferential statistics?

• To infer information about a population from a sample

• To describe data

• To visualize data

• To collect data