statistics_quiz_questions (1).csv

Question,Answer A,Answer B,Answer C,Answer D,Answer info (+ explanation) "Why might researchers choose to survey a sample of 1,000 people in a country instead of all 10 million citizens?",It is more time-efficient and cost-effective to survey a sample.,A sample can give a different average than the...

Question,Answer A,Answer B,Answer C,Answer D,Answer info (+ explanation) "Why might researchers choose to survey a sample of 1,000 people in a country instead of all 10 million citizens?",It is more time-efficient and cost-effective to survey a sample.,A sample can give a different average than the population.,It's impossible to calculate an average for all 10 million citizens.,Researchers prefer dealing with smaller numbers in their studies.,A) It is more time-efficient and cost-effective to survey a sample. Surveying a sample saves time and money while still allowing researchers to gather reliable data about the larger population. "If you conduct a study on all 100 students in a class to find their average test score, what type of statistical analysis is this?",Descriptive statistics,Inferential statistics,Ordinal statistics,Random statistics,A) Descriptive statistics. Measuring every student in the class is purely describing the dataset without inferring anything about a larger group. Which of the following is NOT a reason for using samples instead of surveying entire populations?,It reduces time and costs associated with data collection.,It avoids issues with accessibility and availability of people.,It always provides more accurate results than surveying everyone.,It allows for inferences about the population without measuring everyone.,"C) It always provides more accurate results than surveying everyone. Surveying the entire population is more accurate, but using a sample can still be highly reliable while saving time and resources." "In a city with 5 million residents, a researcher wants to understand the average household income. She surveys 1,000 households and uses the data to estimate the average income for the entire city. What type of statistical method is she using?",Descriptive statistics,Inferential statistics,Categorical statistics,Nominal statistics,B) Inferential statistics. The researcher is using a sample to make inferences about the entire city's population. What makes a sample a good representation of a population in inferential statistics?,Choosing the largest sample size possible regardless of the method.,Selecting individuals who are most convenient to survey.,Using random sampling techniques to avoid biases.,Only including individuals who have volunteered to participate.,C) Using random sampling techniques to avoid biases. Random sampling helps ensure that the sample is representative of the population. You collect information on the favorite colors of students in a school and find that 30% of the students prefer blue. What type of data and statistical method is this?,Categorical data using descriptive statistics,Quantitative data using descriptive statistics,Categorical data using inferential statistics,Quantitative data using inferential statistics,"A) Categorical data using descriptive statistics. Reporting the favorite colors of students involves categorical data, and summarizing the data as 30% preferring blue is descriptive." A survey records the number of cars owned by households in a city to estimate the average number of cars owned in the entire city. What type of data and statistical method is this?,Quantitative data using descriptive statistics,Quantitative data using inferential statistics,Categorical data using inferential statistics,Categorical data using descriptive statistics,"B) Quantitative data using inferential statistics. The number of cars is quantitative, and using a sample to estimate the average number for the entire city is an example of inferential statistics." "You collect data on the job satisfaction levels (e.g., satisfied, neutral, dissatisfied) of 500 employees and use a sample of this data to make a generalization about job satisfaction for the entire company. What type of data and statistical method are you using?",Categorical data using descriptive statistics,Quantitative data using inferential statistics,Categorical data using inferential statistics,Quantitative data using descriptive statistics,"C) Categorical data using inferential statistics. Job satisfaction levels are categorical data, and using a sample to generalize for the whole company involves inferential statistics." A company measures the salaries of all employees and summarizes them using the mean and standard deviation. What type of data and statistical method is this?,Quantitative data using descriptive statistics,Quantitative data using inferential statistics,Categorical data using descriptive statistics,Categorical data using inferential statistics,"A) Quantitative data using descriptive statistics. Salaries are quantitative data, and calculating the mean and standard deviation for all employees is descriptive." You survey a sample of college students to estimate the average number of hours they study each week and use this estimate to make predictions for all college students. What type of data and statistical method is this?,Categorical data using inferential statistics,Quantitative data using descriptive statistics,Quantitative data using inferential statistics,Categorical data using descriptive statistics,"C) Quantitative data using inferential statistics. The number of hours studied is a quantitative variable, and using a sample to make estimates for a larger group is inferential."