Diagnostic Test on Data Collection

Which of the following is an example of a data collection method?

• Graphing data

• Conducting a survey

• Solving equations

• Drawing conclusion

Why is it important to use proper sampling techniques in data collection?

• To make data easier to organize

• To ensure the results represent the entire population

• To reduce the number of questions asked

• To avoid creating graphs

A researcher wants to know the favorite sport of students in a school. Which sampling technique should they use to get a representative sample?

• Selecting students randomly from all grades

• Surveying students from one class only

• Asking only the school athletes

• Interviewing the school principal

A student conducts a survey to determine the most popular fruit in their school by asking 20 randomly selected students. Which data collection technique is the student using?

• Census

• Systematic sampling

• Random sampling

• Stratified sampling

What is the purpose of a frequency distribution table?

• To organize data into groups for easier analysis

• To create graphs and charts automatically

• To perform mathematical operations on data

• To collect data from surveys

A teacher records the scores of 40 students in a math quiz. To make the data easier to analyze, they group the scores into intervals of 5 (e.g., 0-4, 5-9, etc.). What are they creating?

• A pie chart

• A bar graph

• A frequency distribution table

• A stem and leaf plot

A class conducted a survey on the number of books read by students in a month. The data collected is: 3, 2, 2, 5, 3, 4, 2, 3, 5, 4. Which of the following correctly represents this data in a frequency distribution table?

• BOOKS READ FREQUENCY 2 3 3 3 4 2 5 2

• BOOKS READ FREQUENCY 2 2 3 3 4 3 5 2

• BOOKS READ FREQUENCY 2 4 3 2 4 2 5 2

• BOOKS READ FREQUENCY 2 3 3 4 4 2 5 1

A teacher collected the scores of students in a quiz and wants to organize the data into a frequency distribution table. Create a table for the following scores: 10, 15, 10, 20, 15, 10, 20, 15, 20, 25. Which is the correct frequency distribution table?

• Score Frequency 10 2 15 3 20 3 25 1

• Score Frequency 10 3 15 3 20 3 25 1

• Score Frequency 10 3 15 2 20 4 25 1

• Score Frequency 10 2 15 2 20 4 25 2

Which of the following graphs is used to show how data is divided into parts of a whole?

• Bar Graph

• Pie Chart

• Line Graph

• Stem-and-Leaf Plot

What is the main advantage of using a line graph over a bar graph when displaying data?

• It shows the frequency of categories

• It highlights trends over time

• It displays parts of a whole

• It organizes data by classes