Oops

Which sampling method divides a population into distinct subgroups and ensures representation by randomly selecting individuals from each subgroup?

• Simple Random Sampling

• Stratified Sampling

• Cluster Sampling

• Systematic Sampling

A frequency distribution table is constructed for the weights of students in a class. The following table is incomplete. Which of the following is the missing percentage for the 71-80 range?

• 40%

• 50%

• 60%

• Cannot be determined

A shop tracked the daily sales of items for a week. The frequency distribution table below summarizes the data. Explain why the relative frequency and percentage values for the 21-40 range must match those of the 61-80 range.

• Both ranges have the same frequency, so their relative frequencies and percentages will also be the same.

• The percentages are assigned equally across all ranges.

• The percentages are based on the total frequency, which ensures symmetry.

• Frequencies and percentages are unrelated, so they do not need to match.

A survey shows how students spend their leisure time:

Sports: 30%

Reading: 20%

Watching TV: 25%

Social Media: 25%

If the pie chart for this data is created, what is the angle of the segment representing "Watching TV"?

• 60 degrees

• 72 degrees

• 90 degrees

• 144 degrees

Which component of a bar graph indicates the categories being compared?

• Title

• X-axis

• Y-axis

• Legend

Jose conducted a survey in his school to determine students' favorite sports. He presented the survey results as shown in the figure. He wants to share his findings with the school sports committee to decide which sport to promote more heavily. What conclusion can be drawn from this chart?

• Basketball is the least favorite sport.

• Soccer is the most popular sport.

• Volleyball and Basketball have the same popularity.

• "Others" accounts for the majority of responses.

A school conducted a survey to determine students preferred after-school activities. The data is presented in the double bar graph below, showing the number of students preferring each activity in Grade 7 and Grade 8. Based on the graph, which of the following statements is NOT true?

• Grade 8 students show a higher preference for sports than Grade 7 students.

• Art Classes are more popular among Grade 8 students than Grade 7 students.

• The total number of students who prefer Music Lessons is the same for both grades.

• Coding Club has a greater number of Grade 7 participants than Grade 8 participants.

Which of the following statements correctly describes the set of integers?

• The set of integers includes all whole numbers greater than zero.

• The set of integers includes all whole numbers, their negatives, and fractions.

• The set of integers includes positive and negative whole numbers, including zero.

• The set of integers includes only positive whole numbers and zero.

Match the following real-life situations with their corresponding positive or negative numbers. Which pairing is correct?

• Climbing 800 meters: −800meters

• Spending $75 on groceries: −75 dollars

• A temperature increase of 12°C: −12°C

• A decrease in sea level by 5 m: +5 meters

What is the integer located 4 units to the left of 2?

• 4

• 6

• -2

• -4