• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Testing Materials Coursework

Extracts from this document...


Testing Materials Coursework Tommy Patton Plan In this investigation we are going to measure the tensile strength of four different materials, these are: * Elastic * Wool * String * Plastic fishing wire We will measure the tensile strength in grams and kilograms. To make sure that the comparisons we make are fair we are going to repeat the investigation 3 times for each sample of material, use the same apparatus throughout the investigation, use the same weights for each sample and use the same length of material for each sample. ...read more.


when the sample material snaps the weights won't fall on the bench, we will also keep well away from the weights so that they won't fall on our feet. Results The table below shows our results. Sample Material Broke Didn't Break Weight Needed (Kg) Wool test 1 x 2.5 test 2 x 2.35 test 3 x 2.5 String test 1 x 3+ test 2 x 3+ test 3 x 3+ Elastic test 1 x 1.5 test 2 x 1.65 test 3 x 0.7 Plastic Wire test 1 x 3+ test 2 x 3+ test 3 x 3+ I believe that test 3 for the elastic sample is an outlier and should be disregarded. ...read more.


Evaluation Getting the same length of material for every sample, putting all the weights on equally, getting enough material for samples and putting the weights on in the same order were some of the difficulties we had with collecting reliable data for the investigation. I am quite confident in my conclusions but I believe that they could have been improved. The investigation could have been improved by, measuring each sample of material previous to the investigation, using weights that were all the same size and shape and having more weights to make sure that all the materials snapped. If these were all taken into account our results would have been more accurate and it would have been easier to collect reliable data. Tommy Patton 10R ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Probability & Statistics section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Probability & Statistics essays

  1. GCSE Mathematics Coursework: Statistics Project

    The Amount of TV Watched By Boys: The Amount of TV Watched By Girls: Median (Q2): 14 Median (Q2): 19 Lower Quartile (Q1): 10 Lower Quartile (Q1): 12 Upper Quartile (Q3): 21 Upper Quartile (Q3): 23 Min. watched: 1.5 Min.

  2. "The lengths of lines are easier to guess than angles. Also, that year 11's ...

    From the stem and leaf diagrams, you can see that the median for the year 9's line estimate is 5.0cm, which is 0.4cm above the actual length of the line, and the year 11 median for the angle was 40.

  1. Statistics coursework

    I will do this by using a scatter diagram as this enables me to draw a line of best fit making the relationship between IQ and total of KS2 results, if any, clear. To then investigate how this affects the two sexes KS2 results I will draw another cumulative frequency graph.


    I will round my calculations for heights and weights to 0d.p. because it is illogical to process information that is more accurate than the data it is based on, although this will make my predictions less accurate. I will use scatter graphs to analyse the type of correlation there is between height and weight for each year group and gender.

  1. Statistics Coursework

    Finally, I will then come to a conclusion stating whether the age does or does not affect the attendance of the students and their learning at school. Hypothesis Does the age of the students' affect their attendance at school? There is a probability that there is a small relationship between

  2. Intermediate Maths Driving Test Coursework

    Sampling is necessary to attempt to give a general picture of all the data, there is too much data to deal with so I need a proportional section that reflects the whole. By using a stratified sample and using the mean and range, I can provide a fairly detailed answer

  1. Driving test

    I will now continue with the investigation. Hypothesis 1 I will investigate the hypothesis: "The more lessons taken by a pupil the fewer mistakes they make in the test.' I predict that this hypothesis is correct. This is because I think this because the more you practice at something, generally

  2. Estimating the length of a line and the size of an angle.

    Which in this case makes it an unfair sampling method. I have turned down systematic sampling because each year group contains a different proportion of people. So one-year group may contain more people than the other year group and the second year group may contain more males than the first year group.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work