Statistics
Hypotheses
1. The higher the IQ, the higher the average SATs results. There will
be a stronger relationship between the girls’ IQ and SATs results than
the boys’.
2. Boys will have a higher IQ than girls.
3. IQ will increase as age increases.
Plan
I have been given two sheets of containing 100 pieces of data on each.
The data is secondary as I have not collected it myself. One set is
from key stage three and the other from key stage four. The data
includes year group, forename, age, gender, hair colour, eye colour,
favourite type of music, IQ, height, weight, distance between home and
school and SATs results.
I will use a sample of 80 students, because 200 is too time consuming.
A sample of 80 will still give me a reliable answer. I will use a
stratified sample so my sample is in proportion as the full set of
data.
To do the stratified sample I am going to count how many year seven,
eight, nine, ten and eleven students there are on the sheets of data.
I will then divide the total number of year seven students by the
total number of pupils, then times by 80. I will repeat this for the
remaining year groups to complete my stratified sample.
Once I know the amount of students from all the different year groups
I will use a calculator to generate random numbers for my data.
Hypothesis 1
The higher the IQ, the higher the average SATs results. There will be
a stronger relationship between the girls’ IQ and average SATs results
than the boys’.
To prove my first hypothesis I am going to plot IQ against the average
SATs results on a scatter graph. I am doing this to see any
correlati...
... middle of paper ...
...rger than the others. The
highest value is between the two highest values for year eight and
nine.
As I mentioned earlier the values in the year eleven boxplot are
larger. The LQ is about the same as all the other medians, the median
is higher than most of the other upper quartiles and the UQ is larger
than all the others. The highest value is 125, this is the higher than
all the others by at least 4.
Evaluation
Generally, my coursework went quite easily. I didn’t encounter any
problems apart from entering data in to a graphical calculator. I had
to repeat this process a number of times due to missing out data.
If I were to repeat the coursework I would use a larger sample size or
compare data from different schools to make sure my results are
correct for the country or just a few schools in particular.
good. To give you an idea of how well that is, you need to examine the averages.
Answer: The fact that an investigation of local restaurants was conducted in which 150 were selected randomly indicates that this is a sample. This sample indicates that out of the 150 randomly selected, 42% of this random selection out of the total population of restaurants possessed series health code violations.
Therefore if I were to do this study again I would do a pilot study
Questions 5-8. Choose ONE of these constructed responses. Write the number you are responding to.
Another confound that may impact the results of this study could be the testing effect. Repeated testing may lead to better or worse performance. Changes in performance on the test may be due to prior experience with the test and not to the independent variable. In addition, repeated testing fatigues the subjects, and their performance declines as a result (Jackson, 2012). Because the professor is interested in determining if the implementation of weekly quizzes would improve test scores, an experimenter and/or an instrumentation effect may also affect results.
2. When you ask someone to participate, explain the basic nature of the study. You
Now I am going to show five typical samples below to be in favor of
Both work samples were given as a formative assessment on the same day. I placed students in various groups according to their abilities and provided a different instruction on coins. This shows my ability to use “multiple and appropriate types of assessment” for
14.23, 14.32, 14.98, 15.00, 15.11, 15.21, 15.42, 15.47, 15.65, 15.74, 15.77, 15.80, 15 .82, 15.87, 15.98, 16.00, 16.02, 16.05, 16.21, 16.21, 16.23, 16.25, 16.31, 16.32, 16.34, 16.46, 16.47, 16.51, 16.91, 16.96
...ave been more accurate if the sample size was larger than only 68 undergraduate students.
This essay is going to critically discuss the advantages and disadvantages of using surveys and questionnaires as a method of Socio-Legal research. When conducting socio-legal research, a number of methods can be used to collect useful information.
I will be choosing five different homes at random and will take 10 participants from each. For optimal results, I will choose two participates from each age group from the ten group homes to participate in the study, which will consist of five individuals from each age group.
The Collier Encyclopedia’s definition for probability is the concern for events that are not certain and the reasonableness of one expectation over another. These expectations are usually based on some facts about past events or what is known as statistics. Collier describes statistics to be the science of the classification and manipulation of data in order to draw inferences. Inferences here can be read to mean expectations, leading to the conclusion that the two go hand in hand in accomplishing what mankind has tried to accomplish since the beginning of time – predicting the future. It is the notion of science that this is the most accurate way to predict events yet to occur and this has lead to it being the most widely accepted “fortune telling'; tool in the world today.
4. Determining the Sample Size: Determining the sample size involves several qualitative and quantitative considerations, such as the importance of the decision; the nature of the research; the number of variables in...
Data collection is a process by which you receive useful information. It is an important aspect of any type of research, as inaccurate data can alter the results of a study and lead to false hypothesis and interpretations. The approach the researcher utilizes to collect data depends on the nature of the study, the study design, and the availability of time, money and personnel. In addition, it is important for the researcher to determine whether the study is intended to produce qualitative or quantitative information.