Algebra-1

Question Analysis
This question involves analyzing a line plot (or dataset) to count the number of data points meeting a specific condition (studying for at least 2 hours).
The main focus is on interpreting "at least" in the context of frequency and summing relevant frequencies from the plot.

Key Concept Explanation
"At least" in Frequency: Refers to all values greater than or equal to a given threshold. In a line plot, this means summing the frequencies of all values on the number line that are equal to or larger than the threshold.

Step-by-step Solution
Identify the threshold: "At least 2 hours" includes values 2, 3, and 4.
Find the frequency of each relevant value:
2 hours: 3 students (3 marks in the line plot).
3 hours: 2 students (2 m...