Mathematics 7 Third Quarter Exam

A Grade 7 class is conducting a survey about their classmates' favorite sports. Which sampling technique ensures that every student in the class has an equal chance of being selected?

• Convenience sampling

• Stratified sampling

• Systematic sampling

• Random sampling

A researcher wants to study the spending habits of high school students in a large school. She divides the students into groups based on grade level and selects a few students from each group. What sampling method is being used?

• Convenience sampling

• Stratified sampling

• Systematic sampling

• Random sampling

A survey on public transportation satisfaction is conducted by only interviewing passengers at a bus terminal. Which data collection method is primarily used here?

• Observation

• Online survey

• Face-to-face interviews

• Focus group discussions

What is the primary advantage of using systematic sampling over simple random sampling?

• It requires less time and effort to implement

• It eliminates the need for a sampling frame

• It ensures a higher level of accuracy in the results

• It avoids any form of bias in the selection process

A teacher collected the scores of students in a 20-item quiz. What should be the first step in creating a frequency distribution table?

• Calculate the range of the scores

• Organize the scores in ascending order

• Determine the number of class intervals

• Tally the scores into the intervals

Which of the following is NOT a component of a frequency distribution table?

• Frequency

• Class intervals

• Title of the table

• Graphical representation

A student gathered data on the daily hours spent by their classmates using gadgets. To create a meaningful frequency distribution table, the student decided on 5 class intervals. What factor should guide the choice of class interval width?

• The highest value of the data set

• The range and size of the data set

• The number of data points collected

• The mode of the data set

In a frequency distribution table, the midpoint of a class interval is important for calculating:

• The mode of the data set

• The median of the data set

• The mean of the data set

• The range of the data set

A student grouped their classmates' quiz scores into intervals of 5 (e.g., 1-5, 6-10, etc.). What should they do if a score falls exactly on the boundary of two intervals (e.g., 10)?

• Place it in the higher interval

• Place it in the lower interval

• Ignore the score to avoid overlap

• Divide the score equally between both intervals

A student collected data about the favorite fruit of their classmates. Which type of graph is most suitable to display the data?

• Line graph

• Pie graph

• Stem-and-leaf plot

• Histogram