This means: for every extra inch of screen size, battery capacity increases by about 1058 mAh.
In this mini research, we will collect data from real phones to see if the relationship is linear (a straight line), positive (bigger screen = bigger battery), or if there is no clear relationship. Based on common sense, a larger screen requires more energy to light up. Therefore, phone manufacturers usually put a larger battery inside a phone with a larger screen. mini research in math grade 10 pdf
y = 1058x – 1174 Step 3: Check Correlation Looking at the data, most points are close to the line, but there are outliers (e.g., iPhone 15 Pro Max has a smaller battery than expected for its size). This suggests a moderate to strong positive correlation (estimated correlation coefficient r ≈ 0.85). 6. Conclusion (Answering the Question) Does a linear relationship exist? Yes. Our data supports the hypothesis that screen size and battery capacity have a positive linear relationship. This means: for every extra inch of screen
If a phone’s screen is 1 inch larger, you can expect the battery to be roughly 1000 mAh bigger. However, the relationship is not perfect—Apple’s iPhones tend to have slightly smaller batteries than Android phones of the same size, because their software is more power-efficient. Therefore, phone manufacturers usually put a larger battery
Grade 10 Student Researcher
Using point A: 2000 = 1058(3.0) + b 2000 = 3174 + b b = 2000 – 3174 = -1174