Numerical and statistical skills

Question 4

As part of a physical geography river fieldwork investigation, students measured the soil infiltration rate (in seconds) at four different sites along a transect perpendicular to a river bank.

River Transect Soil Infiltration Data

Site	Distance from River Bank	Trial 1 Infiltration Time (s)	Trial 2 Infiltration Time (s)	Trial 3 Infiltration Time (s)
P	2m	27	49	18
Q	4m	38	14	53
R	6m	31	74	35
S	8m	42	23	61

Calculate the median infiltration time for all the measurements taken during this investigation. You should show your workings.

[2]

Numerical and statistical skills

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Question 4

As part of a physical geography river fieldwork investigation, students measured the soil infiltration rate (in seconds) at four different sites along a transect perpendicular to a river bank.

River Transect Soil Infiltration Data

Site	Distance from River Bank	Trial 1 Infiltration Time (s)	Trial 2 Infiltration Time (s)	Trial 3 Infiltration Time (s)
P	2m	27	49	18
Q	4m	38	14	53
R	6m	31	74	35
S	8m	42	23	61

Calculate the median infiltration time for all the measurements taken during this investigation. You should show your workings.

[2]

Numerical and statistical skills

Question 4

River Transect Soil Infiltration Data

Numerical and statistical skills Questions

Numerical and statistical skills

Question 4

River Transect Soil Infiltration Data

Numerical and statistical skills Questions