# Quiz 11: Quantiles and the Quartile Deviation

Business

Q 1Q 1

Quantiles split data into parts that are…?
A) Of equal frequency
B) Of equal skewness
C) Of equal variance
D) Of equal width

Free

Multiple Choice

A

Q 2Q 2

When splitting a set up into quartiles, what name is given to the value that separates the highest from the second-highest quartile?
A) Upper Quartile
B) Median
C) Mean
D) Lower Quartile

Free

Multiple Choice

A

Q 3Q 3

Identify the lower quartile in this data set: 16, 24, 19, 10, 13, 19, 20
A) 10
B) 13
C) 19
D) 20

Free

Multiple Choice

B

Q 4Q 4

New car sales values for March 2014 show that the lower quartile is £11,750, the median value is £16,360 and the upper quartile is £26,253. What is the value of the quartile distribution?
A) £7251.50
B) £14503.00
C) £16360.00
D) £19001.50

Free

Multiple Choice

Q 5Q 5

Which statement about calculating quartiles is NOT true?
A) All the data values in a set lie within 1 quartile distribution of the median
B) In a simple frequency distribution, the quartiles are easily calculated
C) Quartiles can only be estimated for a grouped frequency distribution
D) The graphical method for estimating quartiles in a grouped frequency distribution is preferred

Free

Multiple Choice

Free

Multiple Choice

Q 7Q 7

Calculate the quartile coefficient of dispersion for data with a quartile deviation of 40 and a median of 95 (1 decimal place).
A) 41.7
B) 41.9
C) 42.1
D) 42.3

Free

Multiple Choice

Q 8Q 8

Using the quartile coefficient of dispersion, compare the information about petrol prices in Australia and Japan to see which has greater variance.
A) Australia
B) Japan
C) They are the same
D) You cannot tell

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Multiple Choice

Q 9Q 9

Which statement about deciles is NOT true?
A) They split a data set up into 10 parts
B) D

_{5}is the median point C) They are commonly used when discussing wages D) Deciles have a tendency to misrepresent dataFree

Multiple Choice

Q 10Q 10

Data for weekly sales total in a Dubai firm are analysed to give the following quartiles: Q

_{1}= AED 45,000; Q_{2}= AED 52,500; Q_{3}= 63,780. Which of the following options represents the correct interpretation of the quartile measure of skewness (qsk) for these figures? A) qsk is positive, indicating a rightward skew B) qsk is positive, indicating a leftward skew C) qsk is negative, indicating a rightward skew D) qsk is negative, indicating a leftward skewFree

Multiple Choice