A2 Paper 5: Data Processing and Statistical Analysis

How is standard error presented in graphs?

• As error bars

• As pie charts

• As line graphs

• As scatter plots

What is the formula for standard error?

• Standard deviation / √n

• Standard deviation x n

• Standard deviation + n

• Standard deviation - n

What does percentage change allow for in data processing?

• Comparison when the starting point is different

• Finding the average value

• Calculating the median

• Determining the mode

How is rate calculated if time to complete a reaction is measured?

• 1/time

• Time x 2

• Time + 1

• Time - 1

Which statistical test is used to analyze the significance of results in genetic crosses?

• Chi-squared test

• Bar graph analysis

• Histogram analysis

• Pie chart analysis

What is the first step in performing a statistical test?

• Write a null hypothesis

• Collect more data

• Create a pie chart

• Calculate the mean

What does a null hypothesis state?

• No significant correlation or difference

• There is a significant correlation

• There is a significant difference

• The data is normally distributed

What is the significance of using statistical tests in field investigations?

• To analyze the significance of results

• To collect more data

• To create graphs

• To calculate averages

What should be considered when selecting a statistical test?

• Nature of the data and whether it is compared or correlated

• The color of the data

• The size of the data

• The shape of the data

What type of data is used in a Chi-squared test?

• Continuous, normally distributed

• Frequency, discrete and categorical

• Ordinal data

• Continuous, linear, normally distributed