A statistics professor collects data from 300 students to analyze study habits. 60% studied for more than 3 hours a day, and 25% of those students scored above 90% on exams. Of the remaining students, 10% scored above 90%. How many students scored above 90% in total?

Sun, 03 May 2026 01:53:46 +0000

**Why Academic Data on Study Habits Is Shaping How Students Study in the U.S.** When educational research corners in on real student behavior, intriguing patterns emerge—ones that matter to learners, parents, and educators across the country. One such insight comes from a study led by a statistics professor analyzing data from 300 students. The findings reveal how time spent studying and academic outcomes connect, sparking attention in a landscape increasingly focused on effective learning strategies. **How Many Students Achieved Top Marks? A Clear Breakdown** The study found that 60% of the 300 students studied more than 3 hours per day. Within this group, 25% scored above 90% on exams. That equates to 180 students studying over 3 hours, of which 45 scored above 90%. Among the remaining 120 students—those studying 3 hours or less—only 10% reached the 90%-plus threshold, resulting in 12 additional high scorers. Adding these together, 45 + 12 equals 57 students who scored above 90%. **Context & Relevance: Why This Trend Matters Now** This data reflects a broader conversation taking place among students, educators, and researchers about optimal study duration and performance. In a competitive academic environment, understanding how study patterns correlate with success helps inform personalized learning approaches. The findings align with growing interest in time management, cognitive load theory, and data-driven education tools. While study habits vary widely, consistent effort—especially above 3 hours daily—shows promising links to academic achievement. **What Math Tells Us About Study Productivity** The numbers follow a clear statistical pattern: early time investment tends to drive stronger outcomes, especially when supported by focus and quality. For many, studying over 3 hours daily provides a solid foundation. The 25% success rate among these students shows return on effort, yet the 10% rate in the lower group underscores that quality—and how time is used—plays a crucial role.