Explain
- what this task is investigating
- who was involved
- how did you conduct the experiment
- what materials were used
In class, you will measure and record the height of each student in your class. This data will be saved into an excel workbook by your teacher and shared with you.
1. Show a screenclip or copy and paste the raw data for your class here:
2. Use this data to create a back-to-back, ordered stem and leaf plot to compare the data for the male and female students in your class. Show any working and processing.
3. Calculate the mean height for both males and females here. Show any working and processing you carry out.
4. Calculate the median height for both males and females here. Show any working and processing you carry out.
5. Calculate the range of heights for both the males and females in the class. Show any working and processing and identify any outliers in the results.
6. Comment on the height or males and females in your year 9 class. This should be detailed and in depth and include some of the key measures of the middle and the range. It should comprise at least 2 paragraphs and be approximately 250-400 words.
In class, you will conduct a survey of each class member to find out ‘how many people live in your household?’ This data will be saved so the whole class can access it.
1. Calculate the mean number of people in a household for your class. Show any working and processing you carry out.
2. Calculate the median number of people in a household for your class. Show any working and processing you carry out.
3. Identify the mode for the number of people in a household for your class.
4. Calculate the range for number of people in a household from your class. Show any working and processing and identify any outliers in the results.
5. Once you have collected and calculated the measures for the primary data, you are required to click on the following link:
This link will send you to a webpage that provides you with statistics from the postcode area of 5108 (which is the area that the school is located).
Make some informed statements comparing the measures of the middle of the data from the primary data (class survey) and the secondary data (website link). This should be completed in 2 paragraphs comprising of 250-300 words in total. This should be a detailed and in-depth analysis between the two sets of data.
In Part C, you will be required to pick a categorical variable of your interest to investigate. The overall goal is to compare your categorical variable between males and female.
1. Conduct your own survey within your class in regard to your categorical variable. Show any working and processing you carry out.
2. Display your categorical data findings between males and females by using the appropriate representations. Acceptable data representations for categorical comparisons include a side-by-side column graph or a back-to-back bar chart. Show any working and processing you carry out.
3. What does this data tell you about your categorical variable? Comment on the patterns of data between males and females. Discuss and compare the patterns of data concisely using 150-200 words.
- What did the task?
- How reliable are your conclusions
- What are the limitations of your conclusion?
- How could the investigation be improved?
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