3k- Data analysis

Question 1

After carrying out a procedure, results are generated. These results must then be analysed. What could this analysis involve the calculation and presentation of?

Answer 1

• mean
• median
• mode
• graphs
• standard deviation
• range of data

Question 2

How should data be presented so that it is suitable for analysis?

Answer 2

In a clear and logical manner

Question 3

What should consideration be given to the validity of in results?

Answer 3

Outliers and anomalous

Question 4

What are statistical tests used to determine?

Answer 4

Whether the differences between the means are likely or unlikely to have occurred by chance

Question 5

How can the variability in results be presented?

Answer 5

Either as a number or displayed on a graph of data as an error bar

Question 6

What is a statistically significant result?

Answer 6

One that is unlikely to be due to chance alone

Question 7

What can happen if the result is found to be statistically significant?

Answer 7

The null hypothesis can be rejected

Question 8

What does it indicate if the treatment mean differs sufficiently from the control mean that their error bars don’t overlap?

Answer 8

The difference may be significant