Exam 8: Mode and Other Measures of Location

If you wish to calculate the average (proportional) increase in the price of bread over the last five years which of the following statistics would give you the most useful figure?

Which of the following datasets is particularly well suited to using the mode to describe the 'average'?

Which option is the best definition of the mode?

In a moderately skewed distribution, which of the following statements is NOT true?

Patrice runs a small cafe in Lyon. He notes down the number of people selecting flavours of crepes. Which flavour is the mode for this data [flavour(frequency)]? Sugar(15); Chocolate(23); Chocolate and Banana (38); Raspberry Jam(11)

Over the last four years, the economy of Kazakhstan has grown by 4.6%, 6.5% and 3.8%. Using the geometric mean, estimate the average yearly growth (2 decimal places).

The Chamber of Commerce is conducting research into the length of time that retailers have been in their current premises. They collect data and then present it in a grouped frequency distribution. The modal class is '4 and up to 6 years' (f=8); the previous class had a frequency of 4; the following class had a frequency of 2. Estimate the mode for this data (1 decimal place).

A courier company calculates the fuel consumption of four mopeds over the same route as 62 km/l; 55 km/l; 59 km/l and 49 km/l. Using the harmonic mean, calculate the average fuel consumption for these vehicles (2 decimal places).

Data on the average monthly spend of 180 mobile phone customers shows that the modal class is '$40 to $50' (f=53); the previous and following classes had frequencies of 24 and 46 respectively. Estimate the mode for this data (2 decimal places).

Which of the following statements about the mode is NOT true?