# data[].attributes.body
did thinking of Maths PBL assignment

# data[].attributes.body
Based on the data and the analysis done above, what do you think is one good piece of advice you may like to give to the leaf harvesters?

One piece of advice would be advising the leaf harvesters to collect as much foxglove leaves as possible from each foxglove tree. They can harvest about 10 leaves from each foxglove tree, which would be more accurate compared to harvesting one foxglove leaf from each foxglove tree. This reduces the possibility of external factors affecting the leaves collected.

# data[].attributes.body
The graph’s coefficient of linear correlation is -0.77748. Hence it is still within an acceptable range to justify the reliability of this graph. From the graph, it can be seen that as the height of the trees increases, the drug concentration(mg/100g of dry leaves) decreases.

# data[].attributes.body
In the above data set, how many variables were involved? State the independent and the dependent variables and explain your answers.

There are 2 variables involved - Height of the leaves and the Concentration of drug content in the leaves in mg/100g. The concentration of the drug content in the leaves is the dependant variable and the height of the leaves would be the independent variable. The amount of drug  concentration would vary along with the height of the leaves.

# data[].attributes.body
5 facts to substantiate that foxgloves leaves are known to have medicinal value:

1. Improves the nutrition of the heart by increasing the amount of blood.

2. An excellent antidote in Aconite poisoning, given as a hypodermic injection.

3. In small or moderate doses, it is a powerful diuretic and a valuable remedy in dropsy.

4. Increases the activity of all forms of muscle tissue, but more especially that of the heart and arterioles.

Used in treatment of internal haemorrhage, in inflammatory diseases, in delirium tremens, in epilepsy, in acute mania and various other diseases, with real or supposed benefits.

# data[].attributes.body
Did referencing and cover page

# data[].attributes.body
If you are involved in the leaf-picking trip, describe at least 2 difficulties you could foresee.
Firstly, It is rather difficult for me to find out which are the younger and older trees. The leaves of the younger trees may still be maturing and hence the drug concentration may vary. Therefore the results may not be as accurate.

Secondly, it would be hard to deduce whether the leaves of the different trees are receiving the same amount of sunlight as this affects the drug concentration because of the sunlight affecting the growth of the trees.

# data[].attributes.body
In the above leaf-picking trip, state 2 reasonable assumptions made on the data collection.

One of the reasonable assumption made is that the people collected leaves from trees that grow in soil with the same pH.

The second assumption is that the leaves were picked from trees at the same area exposed to the same amount of sunlight.

This is to decrease the amount of other variables affecting the concentration of medical compounds in the leaves.

# data[].attributes.body
There are 23 unique values with 2 values being the same, hence the 24 heights are different with one exception.

Using Microsoft excel 2013, we can identify the unique values by:

1. Select the range of cells, or make sure the active cell is in a table.

2. Make sure the range of cells has a column heading.

3. On the Data tab, in the Sort & Filter group, click Advanced.

4. The Advanced Filter dialog box appears.

5. Click Copy to another location.

6. In the Copy to box, enter a cell reference.

7. Alternatively, click Collapse Dialog .

8. Check the Unique records box, and click OK.

9. The unique values from the selected range are copied to the new location beginning with the cell you specified in the Copy to box.

10. In the blank cell below the last cell in the range, enter the ROWS function. Use the range of unique values that you just copied as the argument, excluding the column heading. For example, if the range of unique values is B2:B45, you enter=ROWS(B2:B45).

# data[].attributes.body
3 reasons for varying concentration of foxglove leaves.

1.The amount of sunlight varies according to the location where the foxglove plants are grown,hence foxglove plants grown at places with high exposure to sunlight typically contain higher concentrations of medical compounds and vice versa.

http://www.herbs2000.com/herbs/herbs_foxglove.htm

2.Young foxglove leaves typically have greater concentrations of medical compounds due to most of the nutrients concentrated in the leaves. This happens as no stem or flowers develop in their first year, whereas in the second year, more nutrients are used for growth and and reproduction, resulting in a lesser concentration of medical compounds in the leaves.

https://answers.yahoo.com/question/index?qid=20110705210433AAmUlbZ

3.The pH of the soil affects the availability of medical compound concentration in the leaves as it affects the foxglove plants growth. Foxglove plants grow best in neutral pH soil, a value of 6.5. Soils that are too acidic or alkaline will result in poor nutrient uptake by the foxglove plant.

http://www.nutrientstewardship.com/implementation/article/soil-ph-and-availability-plant-nutrients

http://www.gardenguides.com/130133-foxgloves-acid-soil.html

# data[].attributes.body
PBL assignment here