Question

An article by a researcher reported on a long-term study of the effects of hurricanes on tropical streams in forests. The study shows that one particular hurricane had a significant impact on stream water chemistry. The following table shows a sample of 10 ammonia fluxes in the first year after the hurricane. Data are in kilograms per hectare per year. Complete parts (a) through (e) below. 164 93 154 126 118 121 76 141 87 166 a. Obtain and interpret the quartiles. Q1 = 93 Q2 = 123.5 Q3 = 154 (Type integers or decimals.) Interpret the quartiles. Choose the correct answer below. A. The quartiles suggest that 33% of the samples contain less than 93 units, 33% contain between 93 and 154 units, and 33% contain greater than 154 units. B. The quartiles suggest that 25% of the samples contain less than 93 units, 25% contain between 93 and 123.5 units, 25% contain between 123.5 and 154 units, and 25% contain greater than 154 units. C. The quartiles suggest that the average sample contains 123.5 units. D. The quartiles suggest that all the samples contain between 93 and 154 units. b. Determine and interpret the interquartile range (IQR). IQR = 61 (Simplify your answer. Type an integer or decimal.) Interpret the IQR. Choose the correct answer below. A. The approximate difference between each quartile is 61. B. The data span roughly 61 units. C. The number of units contained in the middle 50% of the samples spans roughly 61 units.

          An article by a researcher reported on a long-term study of the effects of hurricanes on tropical streams in forests. The
study shows that one particular hurricane had a significant impact on stream water chemistry. The following table
shows a sample of 10 ammonia fluxes in the first year after the hurricane. Data are in kilograms per hectare per year.
Complete parts (a) through (e) below.
164 93 154 126 118 121 76 141 87 166
a. Obtain and interpret the quartiles.
Q1 = 93
Q2 = 123.5
Q3 = 154
(Type integers or decimals.)
Interpret the quartiles. Choose the correct answer below.
A. The quartiles suggest that 33% of the samples contain less than 93 units, 33% contain between 93 and 154
units, and 33% contain greater than 154 units.
B. The quartiles suggest that 25% of the samples contain less than 93 units, 25% contain between 93 and
123.5 units, 25% contain between 123.5 and 154 units, and 25% contain greater than 154 units.
C. The quartiles suggest that the average sample contains 123.5 units.
D. The quartiles suggest that all the samples contain between 93 and 154 units.
b. Determine and interpret the interquartile range (IQR).
IQR = 61 (Simplify your answer. Type an integer or decimal.)
Interpret the IQR. Choose the correct answer below.
A. The approximate difference between each quartile is 61.
B. The data span roughly 61 units.
C. The number of units contained in the middle 50% of the samples spans roughly 61 units.

An article by a researcher reported on a long-term study of the effects of hurricanes on tropical streams in forests. The
study shows that one particular hurricane had a significant impact on stream water chemistry. The following table
shows a sample of 10 ammonia fluxes in the first year after the hurricane. Data are in kilograms per hectare per year.
Complete parts (a) through (e) below.
164 93 154 126 118 121 76 141 87 166
a. Obtain and interpret the quartiles.
Q1 = 93
Q2 = 123.5
Q3 = 154
(Type integers or decimals.)
Interpret the quartiles. Choose the correct answer below.
A. The quartiles suggest that 33% of the samples contain less than 93 units, 33% contain between 93 and 154
units, and 33% contain greater than 154 units.
B. The quartiles suggest that 25% of the samples contain less than 93 units, 25% contain between 93 and
123.5 units, 25% contain between 123.5 and 154 units, and 25% contain greater than 154 units.
C. The quartiles suggest that the average sample contains 123.5 units.
D. The quartiles suggest that all the samples contain between 93 and 154 units.
b. Determine and interpret the interquartile range (IQR).
IQR = 61 (Simplify your answer. Type an integer or decimal.)
Interpret the IQR. Choose the correct answer below.
A. The approximate difference between each quartile is 61.
B. The data span roughly 61 units.
C. The number of units contained in the middle 50% of the samples spans roughly 61 units.

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