stat analysis quizzes

1. What is the primary purpose of statistics?

• A) To collect data
• B) To analyze and make conclusions from data
• C) To present data visually
• D) To calculate only mean values

  2. Which of the following is an example of descriptive statistics? 

• A) Predicting sales for the next quarter
• B) Estimating the population's mean income
• C) Calculating the average number of hours worked per week
• D) Conducting a hypothesis test on customer satisfaction

  3. Which of the following best describes the term "population" in statistics? 

• A) A random sample drawn from a group
• B) The entire group being studied
• C) A group with incomplete data
• D) A sample used for testing hypotheses

  4. The median is an example of a measure of: 

• A) Central tendency
• B) Dispersion
• C) Probability
• D) Hypothesis testing

  5. Which level of measurement is used when categorizing individuals based on their marital status (e.g., single, married, divorced)? 

• A) Nominal
• B) Ordinal
• C) Interval
• D) Ratio

6. Which of the following variables is an example of a qualitative variable?  

• A) Age of a student
• B) Number of customers in a store
• C) Hair color of employees
• D) Temperature in a classroom

  7. A sample is: 

• A) A part of a population
• B) A method of data collection
• C) A measure of central tendency
• D) A statistical tool

8. Which of the following is true for a ratio scale of measurement?

• A) It has no true zero point
• B) The difference between values is not consistent
• C) It includes all the properties of an interval scale but with an absolute zero
• D) It can only be used for categorical data

9. The statement "The temperature in a room is 20°C" represents which scale of measurement? 

• A) Nominal
• B) Ordinal
• C) Interval
• D) Ratio

10. Which of the following is an example of inferential statistics? 

• A) Finding the mode of a set of test scores
• B) Estimating the average age of all residents in a city from a sample
• C) Calculating the median income of a group of workers
• D) Summarizing data with a histogram