1.
State what is meant by a hypothesis. [1]
JD SCIENCE
Designing and executing scientific tasks
Answer all questions. Show working. Answers are in a separate file on the Worksheets page — do not look at them until you have finished.
2.
State what is meant by variables. [1]
3.
State what is meant by a risk assessment. [1]
4.
State what is meant by a sampling plan. [1]
5.
State what is meant by a method selection. [1]
6.
State what is meant by repeats and reproducibility. [1]
7.
State what is meant by acceptance criteria. [1]
8.
State what is meant by a literature search. [1]
9.
State what is meant by a scientific report. [1]
10.
State what is meant by review and improvement. [1]
11.
Pat is asked about a hypothesis in a Pearson Laboratory Sciences paper.
(a) Describe a hypothesis. [2]
(b) Explain why a hypothesis is important in this topic. [3]
12.
Pat is asked about variables in a Pearson Laboratory Sciences paper.
(a) Describe variables. [2]
(b) Explain why variables is important in this topic. [3]
13.
Pat is asked about a risk assessment in a Pearson Laboratory Sciences paper.
(a) Describe a risk assessment. [2]
(b) Explain why a risk assessment is important in this topic. [3]
14.
Pat is asked about a sampling plan in a Pearson Laboratory Sciences paper.
(a) Describe a sampling plan. [2]
(b) Explain why a sampling plan is important in this topic. [3]
15.
Pat is asked about a method selection in a Pearson Laboratory Sciences paper.
(a) Describe a method selection. [2]
(b) Explain why a method selection is important in this topic. [3]
16.
Pat is asked about repeats and reproducibility in a Pearson Laboratory Sciences paper.
(a) Describe repeats and reproducibility. [2]
(b) Explain why repeats and reproducibility is important in this topic. [3]
17.
Five repeats take 12 minutes each plus 20 minutes setup. Total time? [3]
18.
A sample plan is every 15 min for 3 hours. How many samples? [3]
19.
n=6. How many degrees of freedom for a mean? [3]
20.
A 2×3 factorial has how many combinations? [3]
21.
Stock is enough for 8 runs. Runs already done: 3. Remaining? [3]
22.
A report is 8 pages, 2 are appendix. Percentage appendix? [3]
23.
Pat carries out a T-Level occupational task on planning and reviewing laboratory investigations. This is a typical Pearson required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
24.
Pat carries out writing or following an SOP for planning and reviewing laboratory investigations. This is a typical Pearson required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
25.
Pat carries out a COSHH / risk-assessment review for planning and reviewing laboratory investigations. This is a typical Pearson required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
26.
Pat carries out data review in a LIMS or quality log for planning and reviewing laboratory investigations. This is a typical Pearson required-practical style question.
(a) Identify the independent variable and the dependent variable. [2]
(b) State one control variable and explain why it must be controlled. [2]
(c) Suggest one improvement or source of error and how it affects the result. [2]
27.
Compare a hypothesis with a sampling plan. [4]
28.
Compare variables with a method selection. [4]
29.
Compare a risk assessment with repeats and reproducibility. [4]
30.
Compare a sampling plan with acceptance criteria. [4]
31.
Apply your knowledge of acceptance criteria to this situation: set before you see the data [3]
32.
Apply your knowledge of a literature search to this situation: evaluate bias [3]