Georgia Dartnall

Student Portfolio

Year 9 Statistics project

on April 1, 2021

What are we studying

For this project, the teachers conducted a survey for which we analysed and described student’s opinion and suggestions towards the uniform (categorical) and their preferred school times (numerical). We need this data so that the staff can apply suggestions and improve life at school for students. 

The Validity and reliability of research methods used in this project

For this project, we received data from everyone who is in Year nine math, this includes year 8 students who are accelerated.  The data given to us is convenience sampling as the test was made compulsory towards the participants (Year 9 Maths). As I stated the data includes accelerated Year 8 students, to make sure the data was reliable and valid they did not make any generalizations. This data may not be valid as it might include non-response bias. This may be because the participants got tired or bored as there were a lot of questions and,  may have randomly priced answers even if they did not agree with them. Finally, our responses were completely anonymous (maintaining our anonymity), and did not use impartial language, this made sure that people were not feeling inclined to give “socially acceptable answers”. 

Results

Our frequency table for our categorical data

Our Frequency table for our numerical data

The range of the start time is 4 hours

Female data

Mean – 8.7 hours

Median – 9 hours

Mode – 8 hours

The interquartile range is 1.5 hours

Male data

Mean – 8.5 hours

Median – 8 hours

Mode – 8 hours

The interquartile range  is 2 hours

Non-binary data

Mean –  9

Median – 9

Mode –  10

The interquartile range  is 1 hour

Our Categorical Data

This is one of the graphs we did for our categorical data. It shows years 9’s thoughts on uniforms and is a bar graph, this graphs tends towards a symmetrical graph. There is an outlier in here, which would be the non-binary people (2 people chose “We should just have a sport uniform” and 1 other chose “We should have a new, more modern  formal uniform”).

These are our other graphs for our categorical data. It is represented as a pie chart. In two of the graphs there are outliers, these being the number 42 in the girls and the number 50 in the boys. There are no outliers in the non-binary graph.

Numerical Data

This is one of our graphs for our numerical data. We chose to represent this in a bar graph. This graph again tends towards a symmetrical graph. There are no outliers in this graph because the data was very even.

This is another way that we chose to represent our numerical data, as a line graph. Like the other graph there are no outliers.

Our Box Plots

This is our box pot that we created for the male students. Like before in the other two numerical data graphs there are no outliers.

This is our other box plot that we created for the females. Like our other two graphs and the males box plot there are no outliers.

This is the box plot for the non-binary people. This also has no outliers. But it may look different to the others because there were only three people that chose non-binary in the survey.

Our findings

These were some of our findings over the 3 weeks we were conducting There are more male students on average than female students, which is shown in the male’s higher median. The female students’ graphs tend towards symmetrical as well as The males. For the non-binary people, it is hard to conclude whether it positively or negatively skewed as there is little data to go off making it an outlier. For two of the groups, they both had the same starting number of 7 and the other group started at the number 9.Something interesting about our data was that a lot of it was quite equal in numbers for both of our questions. That was very surprising for us.

Reflection on our work

Limitations:

Limitations of our work were mainly that there were year eights that did this survey, meaning that it was not just one group doing the survey so their  opinions would be different to year 9’s.  

Recommendations:

I recommend that next year there are: Have more options for the answers to the survey, Better wording of survey questions because some were hard to understand, Year 8’s did the survey could have affected the results, In the survey, we had a bias response as the survey was quite lengthy so make it shorter so people don’t lose interest by the end of it.

Experience with the task:

Our experience with this task was very good. It took us a little bit to get a grip of excel, but other than that everything was great. It was not only a serious task but it was also fun because we didn’t have to always sit doing lots of content and have to end up doing a test. All the data was set out very well so it was easy to read. It was also good to work with a partner and not always by yourself, we were able to split out some of the questions but also do some together. There were somethings that we found challenging, but I would do a project like this in the future.


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