Palgrave Macmillan - Business - Quantitative Methods for Business

What is the ‘relative frequency’?
1. The number in each class
2. The largest value minus the smallest value
3. The proportion of data in each class
4. The number of classes
How many classes should be used as a general rule?
1. More than 10
2. Between 5 and 20
3. Less than 4
4. More than 20
Which of the following is not appropriate when preparing a stem and leaf diagram?
1. Record leaf values in ascending order
2. Allocate equal space to each leaf value
3. Specify stem and leaf units
4. Omit stems with no leaf values
Which of the following is most likely to represent categorical data?
1. The colour of cars at a particular road junction
2. The price of a litre of petrol
3. The age of university students
4. Marks awarded in a test
Which of the following would not be used to display categorical data?
1. A histogram
2. A bar chart
3. A list of frequencies
4. A pie chart
How might you display numerical data which occurs in pairs?
1. In a histogram
2. In a time series plot
3. In a scatter plot
4. In a pie chart
How might you display categorical data which occurs in pairs?
1. In a pie chart
2. In a scatter plot
3. In a bar chart
4. In a contingency table
Which of the following most aptly describes data which would be displayed in a time series plot?
1. Numerical data
2. Numerical data which occur at regular time intervals
3. Categorical data
4. Data which occurs in pairs
If the number 453.67 is recorded on a stem and leaf diagram with stem unit of 100 and leaf unit of 10, what digit would appear as the leaf value?
1. 5
2. 3
3. 54
4. 4
In what way does a stem and leaf diagram provide more information than a histogram?
1. It contains more classes
2. It tells you whether the distribution is skewed
3. It tells you where, within each class, the data lies
4. It shows the proportion of data in each class

Quiz