| Date | November 2021 | Marks available | 1 | Reference code | 21N.1.SL.tz0.27 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Question number | 27 | Adapted from | N/A |
Question
A group of baseball players hit both left handed and right handed. The mean distance travelled by the ball is shown in the chart. What might be concluded about the statistical significance of the data?
A. LH group hits significantly further than the RH group.
B. RH group hits significantly further than the LH group.
C. LH group hits significantly shorter than the RH group.
D. RH group does not hit significantly further than the LH group.
Markscheme
D
Examiners report
This is a tricky question in how it is presented and clearly made the candidates think hard. The way that the question is presented required candidates to consider a lot of information in order to select the correct response.
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?
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19M.1.SL.tz0.26:
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
