Exam 5: Exploring Data With Graphs

Imagine we took a group of smokers, recorded the number of cigarettes they smoked each day, whether they wanted to quit smoking or not, and then split them randomly into one of two 6-week interventions; 'hypnosis' or 'nicotine patch'. After the 6 weeks, we again recorded how many cigarettes they smoked each day and subtracted this number from the number of cigarettes they each smoked pre-intervention, to produce an intervention success score for each participant. Out of the following options, which would be the best method of looking at which intervention was the most successful, taking into account whether the participant wanted to quit or not?

What is this graph known as?

Based on the chart, what was the interquartile range of marks (approximately).

Approximately what is the median success score for those in the hypnosis group who did not want to quit?

Which of the following statements best describes the graph below?

Looking at the graph below, which intervention was the most successful at reducing the number of cigarettes smoked each day in those who wanted to quit?

What does the graph below show?

We took a sample of children who had been learning to play a musical instrument for five years. We measured the number of hours they spent practising each week and assessed their musical skill by how many of 8 increasingly difficult exams they had passed. We also asked them whether their parents forced them to practise or not (were their parents pushy?). What does the following graph show?

What can we say about the graph below?

In IBM SPSS, what is this graph known as?

Looking at the graph below, approximately what was the median success score for the nicotine group?

What is the graph below known as?

We took a sample of children who had been learning to play a musical instrument for five years. We measured the number of hours they spent practising each week and assessed their musical skill by how many of 8 increasingly difficult exams they had passed. We also asked them whether their parents forced them to practise or not (were their parents pushy?). What does the graph suggest about children who spend approximately 1 hour practising a week?

What is the graph below known as?

A study was done to investigate the effect of 'motivation to quit' on the success rate of a new intervention developed to reduce the number of cigarettes smoked per day in a group of smokers. Looking at the graph below, what can we say about the relationship between motivation to quit and the success rate of the intervention?

The graph below shows the mean success rate of cutting down on smoking (positive score = success) in people who wanted to quit and people who did not want to quit. Which of the following statements is the most true?

In IBM SPSS, the following graph is known as a:

Looking at the graph below, which of the following statements are correct?

Approximately what is the mean success score for those who wanted to quit in the hypnosis group?

Imagine we took a group of smokers, recorded how many cigarettes they smoked each day and then split them randomly into one of two 6-week interventions; 'hypnosis' or 'nicotine patch'. After the 6 weeks, we again recorded how many cigarettes they smoked each day and subtracted this number from the number of cigarettes they each smoked pre-intervention, to produce a intervention success score for each participant. Out of the following options, which would be the best method of displaying the results?