Question 20N.2.SL.TZ0.1c
| Date | November 2020 | Marks available | [Maximum mark: 2] | Reference code | 20N.2.SL.TZ0.1c |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Calculate | Question number | c | Adapted from | N/A |
A study was conducted to look at the short-term effects of a change in diet on the risk of disease in young adults. The table shows data on the habitual diet of the participants as well as the study diet followed for two weeks.
[Source: Horowitz, J.F., Ortega, J.F., Hinko, A., Li, M., Nelson, R.K. and Mora-Rodriguez, R.,
2018. Changes in markers for cardio-metabolic disease risk after only 1-2 weeks of a high saturated fat diet in
overweight adults. PLoS ONE, 13(6), e0198372.]
Total blood plasma cholesterol levels were measured before the study began and once a week after starting the study diet. Mean results are shown in the bar chart, including the standard deviation.
[Source: Horowitz, J.F., Ortega, J.F., Hinko, A., Li, M., Nelson, R.K. and Mora-Rodriguez, R.,
2018. Changes in markers for cardio-metabolic disease risk after only 1-2 weeks of a high saturated fat diet in
overweight adults. PLoS ONE, 13(6), e0198372.]
Calculate, showing your working, the percentage change in mean cholesterol level after one week on the study diet.
. . . . . . . . . . . . . . . . . . . .%
[2]
((165–150) ÷ 150) × 100;
(=) 10 (%);
Allow up to 167 = 11.3 %
1 mark for correct working if above 167.
