Practise constructing or interpreting frequency tables, histograms and cumulative-frequency graphs, finding quartiles and comparing box plots or outliers.
Juliet is a sociologist who wants to investigate if income affects happiness amongst doctors. This question asks you to review Juliet's methods and conclusions.
Juliet obtained a list of email addresses of doctors who work in her city. She contacted them and asked them to fill in an anonymous questionnaire. Participants were asked to state their annual income and to respond to a set of questions. The responses were used to determine a happiness score out of 100 . Of the 415 doctors on the list, 11 replied.
Juliet classifies response K as an outlier and removes it from the data. Suggest one possible justification for her decision to remove it.
because the income is very different/implausible/clearly contrived
Note: Answers must explicitly reference "income" to get credit.