| Date | May 2019 | Marks available | 1 | Reference code | 19M.1.SL.tz0.26 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 26 | Adapted from | N/A |
Question
What can be represented by error bars on graphs?
A. Reliability of data
B. One standard deviation of data
C. Percent change of data
D. Validity of data
Markscheme
B
Examiners report
High-difficulty question (41.16 % correct). The third most challenging question. Answer A was the main distractor.
Syllabus sections
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18N.1.HL:.tz0.22:
What can be represented by error bars on a graph?
A. Ratio of the standard deviation to the mean value of a set of data
B. Variability of a set of data from the median
C. Variability of the mode value of a set of data
D. Variability of a set of data from the mean
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17M.1.SL.tz0.30:
What do the error bars in the graph say about data?
[Source: © International Baccalaureate Organization 2017]
A. The data for Group 1 has a lower mean value.
B. The data for Group 2 has a higher degree of variability.
C. The data for Group 1 has a higher degree of accuracy.
D. The data for Group 1 and 2 has the same degree of coefficient of variation.
- 18N.1.SL.tz0.27: What can be represented by error bars on a graph? A. Ratio of the standard deviation to the...
- 17N.1.SL.tz0.26: What do small standard deviation error bars show?
- 21N.1.SL.tz0.27: A group of baseball players hit both left handed and right handed. The mean distance...
