Question
You review the results of survey questions given to two random samples of students from your school. The results are shown in the table below. Why are the results not the same?
Step 1
This means that each student was chosen without any specific pattern or criteria. This randomness ensures that each student has an equal chance of being selected, but it also means that the results can vary greatly from one sample to another. Show more…
Show all steps
Your feedback will help us improve your experience
Amrita Bhasin and 66 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The students noticed that everyone had different answers. If you randomly sample over and over from any population, with the same sample size, will the results ever be the same?
Identify any bias in each sampling method. The table below shows the results of a poll asking students, "How many hours a week would you say you spend oing academic homework?" Which sample most likely was smaller? Explain.
Probability And Statistics
Working with Samples
Use the table. It shows the results of a survey in which 100 students were asked how they spent money last week. $$\begin{array}{|l|c|}\hline \quad \quad\quad\quad \text { Item } & \begin{array}{c}\text { Number } \\\text { of students }\end{array} \\\hline \text { Food } & 78 \\\hline \text { Clothes, accessories } & 20 \\\hline \text { Books, magazines, comics } & 15 \\\hline \text { Toys, stickers, games } & 14 \\ \hline \text { Movie tickets } & 14 \\\hline \text { Arcade games } & 14 \\\hline \text { Gifts } & 13 \\\hline \text { Movie rentals } & 13 \\\hline \text { Music } & 12 \\\hline \text { Footwear } & 11 \\\hline \text { Grooming products } & 11 \\\hline\end{array}$$ Choose one item from Exercise $45 .$ Ask 20 students whether they bought that item. Compare the results with your prediction. Are the results what you expected? Explain.
Rational Equations and Functions
Ratio and Proportion
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD