Interpreting bar graphs (colors) | Math | 3rd grade | Khan Academy

TL;DR

Chelsea conducted a survey on color preferences among 600 students at her school and created a bar graph. This analysis determines the number of students who chose colors not represented on the graph.

Transcript

• [Voiceover] Chelsea asked 600 people at her school their favorite color and graphed the results. Some colors are not on Chelsea's graph. How many people chose colors other than those on Chelsea's graph? So, here's Chelsea's graph, she made a bar graph, and she listed some favorite colors, blue, green, red, yellow, pink, and graphed people who had... Read More

Key Insights

• 🧑‍🎓 Chelsea surveyed 600 students at her school to gather data on color preferences.
• 🉐 The bar graph displayed the preferences for blue, green, red, yellow, and pink.
• 🧑‍🎓 By analyzing the graph, it was found that 540 students chose the displayed colors, while 60 chose different colors.
• 🧑‍🎓 The analysis provides insights on the proportion of students who had color preferences other than those displayed on the graph.
• 📈 The content demonstrates a practical application of graphing and data analysis in understanding preferences.
• 🧑‍🎓 The process of subtracting the number of students represented on the graph from the total surveyed helps deduce the number of students with different color preferences.
• 🧑‍🎓 The analysis assumes that every student surveyed had a single favorite color.

Questions & Answers

Q: How did Chelsea determine the favorite colors of students at her school?

Chelsea conducted a survey among 600 students at her school to gather data on their favorite colors.

Q: Which colors were represented on Chelsea's graph?

Chelsea's graph included the favorite colors blue, green, red, yellow, and pink.

Q: How did Chelsea calculate the number of students who chose colors not on the graph?

Chelsea subtracted the total number of people represented on the graph (540) from the total surveyed (600) to find that 60 students chose colors other than those displayed.

Q: What was the favorite color that was not represented on the graph?

The exact favorite color not represented on the graph is not mentioned in the provided content.

Summary & Key Takeaways

• Chelsea surveyed 600 students at her school to determine their favorite colors.

• She created a bar graph representing the preferences for blue, green, red, yellow, and pink.

• The analysis aims to calculate the number of students who chose colors other than those displayed on the graph.