Quantitative Data:
Quantitative data is information about quantities; that is , information that can be measured and written down in the form of numbers. e.g The angle of the beach slope.
Qualitative Data:
Qualitative data is typically descriptive data which gives opinions. e.g the shape of a pebble.
Primary Data:
Primary data is data that you have collected first hand e.g measuring the angle of the beach slope.
Secondary Data:
Secondary data is data that you find second hand and that you haven't collected yourself. e.g Finding information from a map.
Random Data:
Random data is collected using a random number generator to determine the intervals of measurement e.g along a transect.
Stratified Data:
Stratified data is data that has a strategy approach. e.g measuring twice between every groyne.
Systematic Data
Systematic data is data that uses a systematic approach. e.g every 3 meters
Primary data is data that you have collected first hand e.g measuring the angle of the beach slope.
Secondary Data:
Secondary data is data that you find second hand and that you haven't collected yourself. e.g Finding information from a map.
Random Data:
Random data is collected using a random number generator to determine the intervals of measurement e.g along a transect.
Stratified Data:
Stratified data is data that has a strategy approach. e.g measuring twice between every groyne.
Systematic Data
Systematic data is data that uses a systematic approach. e.g every 3 meters
How is it collected?
Random data may be using a random number generator to get a number and then whatever number that comes up you use that. For example asking the 15th person what they think of how tidy the beach is.
Stratified data is a consistent data collection, like every 3 meters.
Systematic data would be using a system to get data, for example asking 50% men and 50% women.
What is a transect?
A transect is a line following a route along which a survey or observations are made. The transect is an important geographic tool for studying changes in human and/or physical characteristics from one place to another.
Our Trip To Highcliffe
On our trip to HighCliffe we were given several tasks involving measuring High Cliff beach and the shape of pebbles we found there. We set up a transect up the beach from the sea to the path, we marked out every 3 meters with sticks and measured the angles with a gun clinometer every 3 meters up the transect.
Next we placed a quadrat down every 3 meters up the transect, we took 4 pebbles from each quadrat one in each corner and measured the height, width and depth of each pebble with calipers.
We then measured the volume of ten pebbles in each 3 meter strip along the transect. We filled a jug with 1000ml of water and dropped 10 pebbles in for each 3 meter section. We record the increase in volume and replaced the water back to 1000ml for the next 3 meter section.
Then we used the Powers chart to judge what class the pebbles came, and the shapes of the pebbles for the example the roundness of the pebbles.
How accurate was our data?
My Data was reasonably accurate because we measured in millimeters instead of centimeters. The scale of measurement was smaller and therefore more accurate. It also suited what we were measuring because the pebbles were quite smaller and needed smaller units of measurements. We used calipers to measure the pebbles this was precise because we used the same method to measure the size of the pebbles. Choosing the class of the pebbles was down to personal opinion however most of the pebbles were in class 4 or 5.
My Data was reasonably accurate because we measured in millimeters instead of centimeters. The scale of measurement was smaller and therefore more accurate. It also suited what we were measuring because the pebbles were quite smaller and needed smaller units of measurements. We used calipers to measure the pebbles this was precise because we used the same method to measure the size of the pebbles. Choosing the class of the pebbles was down to personal opinion however most of the pebbles were in class 4 or 5.
Null Hypothesis
Long shore drift does not move from west to east.
We can prove this hypothesis to be incorrect because the west of the beach is higher than the east, which has been starved of shingle and sand due to the groyne holding it in place. This proves that long shore drift takes place from west to east, however the sediment was held up by the groynes preventing long shore drift from taking place. For example the first group measured the east of the beach and recorded a height of 7m and the last group towards of the east of the beach measured 3m.
Long shore drift does not move from west to east.
We can prove this hypothesis to be incorrect because the west of the beach is higher than the east, which has been starved of shingle and sand due to the groyne holding it in place. This proves that long shore drift takes place from west to east, however the sediment was held up by the groynes preventing long shore drift from taking place. For example the first group measured the east of the beach and recorded a height of 7m and the last group towards of the east of the beach measured 3m.