• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Bio-Statics Laboratory

Extracts from this document...


Introduction * Historical Background: Biostatics is the application of statics to a wide range of topics in biology, it is base in the design of biological experiments, is mostly use in the camp of medicine and agriculture; the collection, summarization, and analysis of data from those experiments; and the interpretation of, and inference from, the results. Biostatistics is routinely used to drive biology experiments. Data is gathered and analyzed before, during, and after a biology experiment, with the intent to come to some form of logical conclusion about what might not be exactly empirical results. On the other hand, a biostatistics experiment can be entirely mathematical * Static Value: Average: According to the Thesaurus dictionary, average is: "Something, as a type, number, quantity, or degree, that represents a midpoint between extremes on a scale of valuation." The average is taken by the sum of all data and then dividing the result by the number of data. It is used for having a middle and sole number in a set of data that can represent the whole set. Median: In statistics, the median is the numeric value that separates the higher half of a sample, population of probability distribution, from the lower half. ...read more.


T-Test: According to the Encyclop´┐Żdia Britannica, the student's t-test is "in statistics, a method of testing hypotheses about the mean of a small sample drawn from a normally distributed population when the population standard deviation is unknown." Data Colection: The process of the data obtaining, was very simple, the objective was to make two data collections, one of some human anatomical part of two different populations, and the last one was of two different plants population that share the same environment. The group decide to measure the large of the middle finger, we take the example of the female and the male population of one same grade, to analyze the relation between this two populations.. Here is the data table of middle finger (right hand) size (PD The variable is in cm): Bio-Statistics: Comparation of the middle finger length N Male Population Female Population 1 10,5 9,8 2 10,2 9 3 10 8,5 4 10 8,5 5 11,3 8,6 6 10,3 9 7 11,2 9 8 10 9 9 10,2 8,1 10 10 9,4 11 10,5 10,3 12 10,5 9,6 13 10,5 9,6 14 9,7 9 15 9 9 Mean 10,26 9,093333333 Mode 10,5 9 Range 2,2 2,2 Variance 0,312571429 0,324952381 ...read more.


In the second case, the one of the length of the leaves, the correlation is of -0.0118, they are not exactly the same, but they have a low level of compatibility, but the T value expose that it is a huge percent of probability that his values are causality. And is because actually, this two populations are two different species, so they are not comparable at all. * Is Biostatistics important for science The biostatics give the possibility to any camp of science, to make deeper and exact studies of population or phenomena, the biostatics give the chance to find similarities, and to make comparations of populations, is a necessary tool to analyze nature. The statistics part involves the accumulation, tracking, analysis, and application of data. Biostatistics is the use of statistics procedures and analysis in the study and practice of biology. As such, it has many real-world and scientific applications. * What was bad in the practice During the practice, maybe was committed a mistake of interpretation in the T value table, so the analysis is not 100% trustable . * Who it can be improved For the next time, the solution is jut in consulting and discus this type of question during class, beside the rest of the laboratory was take in a satisfactory way. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Biology essays

  1. Yeast Population

    Time: Since we are measuring the yeast population, I had set a certain limit of time, which was 24 hours. By making it 24 hours, I had the same given time for each trial, making the result as accurate as possible. Apparatus, Quantity 500mL Beaker (6)

  2. Lung Capacity Fitness Level

    -1.06 / 1.15 2. -1.10 / 1.52 3. -1.02 / 1.83 = 2.21 = 2.62 = 2.85 2 15 / 55kg / 170cm 20.11 / ESL 2 / 11:57am 18 Ex low 1. -1.12 / 2.02 2. -1.02 / 1.60 3. -1.02 / 1.15 = 3.14 = 2.62 = 2.17 3 15 / 55kg / 175cm 20.11 / ESL 1 / 12:13pm 16 Ex low 1.

  1. Genetics NOTES

    A continuous variation is brought about by the combined effect of many genes - The main method of gathering human inheritance information is pedigrees that show patterns of inheritance in certain families - Males have the genotype XY whilst females have XX - Sex-linked diseases occur due to the modification

  2. Activated sludge wastewater treatment system and method

    have a solid retention time of approximately twenty days. The excess solids produced may be determined by the yield of the activated sludge process multiplied by the mass of the contaminants removed. The yield may be measured in units of pounds of "chemical oxygen demand" or COD, which is a term commonly used to measure the amount of contaminants which are removed.

  1. Biology Scientific Events

    The RNA itself seems to be involved in determining which genes are active and which proteins are produced. I think the discovery of RNA interference is very amazing and it has the potential to do great things in the medical world like curing diseases and cancer.

  2. How does the distribution of Plantago maior differ?

    Repeat the procedure from points 1-4 at least 20 times in each environment. 6. Investigate the pH of the soil from each environment; use the pH meter to do it. 7. Note down the results. 8. Investigate the permeability of the soil from ach environment.

  1. Examine the correlation between soil moisture at different heights up the slope and the ...

    This should be done for 30 seconds (in order for the reading to stabilise). This recording should be made at the site of every Bracken Fern that is measured and should be repeated 3 times, in order to guarantee a reliable reading.

  2. Ecological studies of rice (Oryzae Sativa) populations

    Table 3: Visual characteristics of the two populations of rice used in experiment. Population A Image Population B -Thinner / smaller width -Longer in length -Wider / larger width -Shorter in length Table 4: Lengths/cm (±0.01cm) of 30 randomly selected rice grains from two different populations of Oryzae Sativa, mean length/cm (±0.01cm)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work