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grade12ml_data_handling_quiz3 draws its questions at random from a bank of 12 questions, with full worked solutions for every one.
A few of the question types, with full solutions, so you know what to expect.
Write down the month with the highest income for rail transportation.
Answer: September
\(\text{Read down the RAIL income column and find the largest value.}\)
\(\text{September} = \text{R}275\text{ million, the highest of the twelve months.}\)
Calculate the mean monthly income for rail transportation (in R millions).
Answer: R244,92 million
\(\text{Add all twelve rail income values: total} = 2\,939\)
\(\text{mean}=\dfrac{2\,939}{12}\)
\(=244{,}9166\ldots\)
Calculate the road transportation income for April as a percentage of the total land income for April.
Answer: 75,74%
\(\text{April road income} = \text{R}743\text{ m; April total land income} = \text{R}981\text{ m}\)
\(\dfrac{743}{981}\times100\)
\(=75{,}739\ldots\%\)
Write down the total number of land passenger journeys for December.
Answer: 45 905 thousand
\(\text{Read the TOTAL LAND passenger journeys column for December.}\)
\(\text{Check: } 23\,592 + 22\,313 = 45\,905\)
Write down in words the total number of passenger journeys for September.
Answer: Sixty-five million one hundred and sixty-eight thousand
\(\text{September total land journeys} = 65\,168\text{ thousand}\)
\(\text{The values are in THOUSANDS: } 65\,168\times1\,000 = 65\,168\,000\)