Year 11 Psychology - Data

What is the term used for data that is collected firsthand by a researcher?

• qualitative

• secondary

• primary

• quantitative

What type of data is being recorded when a participant fills in a sleep diary noting their perceived hours of sleep each night over the previous week?

• 
  Quantitative and Objective

• 
  Qualitative and Objective

• Qualitative and Subjective

• 
  Quantitative and Subjective

What are descriptive statistics used for?

• 
  Predicting future trends

• Organising data that has been collected as part of a study

• Calculating the probability of events

• Solving equations

What type of variable is plotted on the vertical y-axis in a column graph?

• 
  Independent variable

• 
  Dependent variable

• Discrete variable

• 
  Continuous variable

Bar charts are used to display data with what characteristic?

• 
  Continuous changes over time

• 
  Data without numerical values

• Discrete categories

• Data that cannot be quantified

Which of the following is NOT a measure of central tendency?

• Mean

• Median

• Mode

• Standard deviation

What is a disadvantage of using the mean as a measure of central tendency?

• 
  It cannot be calculated for ordinal data.

• 
  It is difficult to understand.

• It is not useful for categorical data.

• It is vulnerable to extreme values known as outliers.

What can be inferred about a dataset with a higher standard deviation?

• Less variability

• 
  More variability

• More consistency

• No variability

In a chemistry experiment, a student repeatedly measures the boiling point of water and records the following results:
101.2°C, 101.3°C, 101.1°C.
The known boiling point is 100.0°C.

What do these results demonstrate?

• High accuracy and high precision

• High accuracy and low precision

• Low accuracy and high precision

• Low accuracy and low precision

A participant's memory recall score improved from 12 correct words to 18 correct words after using a visualisation technique.
What is the percentage increase in the number of correct words recalled?

• 33%

• 50%

• 66%

• 75%