A student conducted an experiment to measure the growth of plants under different light conditions. The results are shown in the table: Light Condition (hours): 2, 4, 6, 8; Plant Growth (cm): 5, 10, 15, 20. What is the mean plant growth for the light conditions tested?

During an experiment, a group of students recorded the time it took for a chemical reaction to complete under different temperatures: 10°C - 15 minutes, 20°C - 10 minutes, 30°C - 7 minutes, 40°C - 5 minutes. Which type of graph would best represent the relationship between temperature and reaction time?

A science class performed an experiment to measure the effect of fertilizer on plant height. They repeated the trials four times and recorded the following heights: Trial 1 - 12 cm, Trial 2 - 15 cm, Trial 3 - 14 cm, Trial 4 - 13 cm. What chart would best display the mean plant height for these trials?

In an experiment to investigate water evaporation rates, students recorded the rate at different temperatures: 20°C - 4 ml/hr, 30°C - 9 ml/hr, 40°C - 15 ml/hr, 50°C - 23 ml/hr. What is the mean evaporation rate across these temperatures?

A student conducted a survey to find out the favorite fruit among peers. The results were as follows: Apples - 10, Bananas - 8, Grapes - 12, Oranges - 6. What is the most appropriate way to visually display this data?

In an experiment to test the effect of pH on enzyme activity, students recorded the enzyme activity levels at different pH values: pH 3 - 20 activity units, pH 5 - 35 activity units, pH 7 - 50 activity units, pH 9 - 30 activity units. What type of graph would best represent the relationship between pH and enzyme activity?

Students conducted an experiment to observe the effect of different salt concentrations on seed germination rates. They used the following salt concentrations and recorded these germination rates: 0% - 100%, 1% - 85%, 3% - 70%, 5% - 60%. How would you organize this data to best understand the trend?

A biology class conducted an experiment measuring heart rates under different activities, resulting in the following data: Resting - 70 bpm, Walking - 90 bpm, Running - 130 bpm, Jumping - 150 bpm. Which chart type would best illustrate these heart rate differences effectively?

In an experiment to analyze battery life, students tested three different brands and recorded the number of hours each lasted: Brand A - 5 hours, Brand B - 7 hours, Brand C - 6 hours. What is the mean battery life across all brands?

Students conducted an experiment measuring the growth of bacteria at different temperatures. The following data was recorded: 20°C - 50 colonies, 25°C - 65 colonies, 30°C - 80 colonies, 35°C - 100 colonies. What is the mean number of bacterial colonies for these temperature conditions?