This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

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22 inquiries
Step 1: Answer Question 1. Numerical data is also known as quantitative data.
Step 2: Answer Question 2. Telephone numbers are used for identification and do not have a meaningful order or numerical value for calculations.
Step 3: Interpret the tally chart for Questions 3 and 4. The tally marks represent the frequency of inquiries for each year level:
Step 4: Answer Question 3. The most number of inquiries is 22, which corresponds to Year Level 7. The question asks for the frequency itself.
Step 5: Answer Question 4. Year Level 9 and Year Level 10 both have 7 inquiries, meaning they have an equal frequency.
Step 6: Answer Question 5. Numerical data obtained through measuring (e.g., height, weight, temperature) can take any value within a given range.
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Answer Question 1. Numerical data is also known as quantitative data.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.