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subtracting without regrouping
Dernière mise à jour : 2023-11-02
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for cases with missing onset dates, date of onset was estimated by subtracting 4 days (median interval from symptom onset to specimen collection date among cases with known dates in these data) from the earliest specimen collection.
para sa mga kaso na may nawawalang mga petsa ng pagsisimula, ang petsa ng pagsisimula ay tinatantya sa pamamagitan ng pagbabawas ng 4 na araw (agwat ng median mula sa pagsisimula ng sintomas hanggang sa petsa ng pakolekta ng ispesimen sa mga kaso na may kilalang mga petsa sa mga datos na ito) mula sa pinakaunang koleksyon ng ispesimen.
Dernière mise à jour : 2020-08-25
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portugal's share, while in fact it is smaller. then, we can calculate the percentage difference between both shares, to check if it matches any of the other options. you can use the traditional method, subtracting and dividing by the lower value: (4.55 - 3. 69) / 3.69 = 0.233 => 23.3% or also the more direct method that we explained and practised in our first book, simply dividing both values and this way getting the result in reference to the unit: 4.55 / 3.69 = 1.233 => 23.3% in any case, you can see that this difference between the two countries' shares, 23.3%, in favour of portugal's share, is much more than 1%, as it would require the answer option b), therefore having to rule this one out too. finally, we can check that the difference in percentage points is: 4.55% - 3.69% = 0.86%, this means, less than 1 percentage point greater for portugal than for spain, so the right answer here is option d). myadvice the main issue in this exercise is to read well the question to decide which data are relevant and which ones we should skip or black out: 10 out of 12 items from our table (!). we have only used two figures and the total amount provided in the statement. 42
Dernière mise à jour : 2021-03-24
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