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Free research papers and essays on topics related to: null hypothesis

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  • Biomass - 1,670 words
    Biomass Many factors contribute to the diversity of life in an environment. The availability of nutrients and sunlight, along with other factors that play a pivotal role in determining what and how much life an area can sustain. While studying the Second Law of Thermodynamics, it came to my attention that the classical pyramid shape of the producer, C1, C2, C3, biomass pyramid did little to take into account the amount of detrital input. I hypothesized that the amount detrital input greatly effected the number of C1, C2, and C3 consumers and thus the overall biodiversity of an ecosystem. Further, if you could find a test-bed where detrital input was the only real difference between two simil ...
    Related: biomass, oxygen content, null hypothesis, surrounding area, comparison
  • Drug Education - 1,093 words
    Drug Education Throughout history, America has been fighting against drug and alcohol abuse in teens and adults. Many ways companies and anti drug groups try to prevent drug and alcohol abuse is through education in school systems and out of school systems. They teach young students about drugs and alcohol before they risk being around them, and they teach older students about drugs while they are around in their daily lives. Are these education programs really necessary? Thats the question many people ask, and also the question Im going to attempt to answer. The government is usually the group that attempts to educate people about the causes and effects of drugs and alcohol through programs ...
    Related: drug abuse, drug and alcohol abuse, drug education, drug treatment, drug treatment programs, education program, education programs
  • Ecology Lab Report - 1,232 words
    Ecology Lab Report Introduction An organism has several ways to avoid being prated upon. One way to avoid this is to practice crptis. Crypis is the action of organisms avoiding predation by blending in with their backgrounds and matching the color pattern of a bark, twigs or leaves. Palatable animals often utilize this strategy as well. Another type of defense is aposematism or warning coloratio. Organisms that produce noxious chemicals or accumalate them from food plants, advertise the fact that they are harmful with conspicous color patterns. Mimicry is the resemblence of an organism toward some other organism or an object inthe enviroment, evolved to decieve predators or prey into confudi ...
    Related: ecology, lab report, report introduction, null hypothesis, decision making
  • Ecology Lab Report - 1,282 words
    ... ). In our case we added up 1.1+ .0024 + .99=2.0924. The results for eight, the red larvae deloped was , while the obsereved removed was 19. The expected removed were 75*19/200=7.1. The chi square analysis for the red larvae deployed was (19-7.1)^2/7.1=19.9. For day 8 the blue larvae developed was 70, while the observed removed was 0. The expected removed were 70*19/200=6.7. THe chi-square analysis for the blue larvae was (0-6.7)^2/6.7=6.7. For day 8 of the lime larvae, deployed was 55, while the observed removed was 0. The expected removed were 55*19/200=5.2. THe chi square analyis for the lime was (0-5.2)^2/5.2=5.2. When all of these are added up, the total chi square analysis was 19.9+ ...
    Related: ecology, lab report, null hypothesis, data collection, lime
  • Introduction - 534 words
    Introduction Memory is involved in all aspects of our lives and can be thought of as the to retain information and demonstrate retention through behaviour. We have vast amounts of knowledge stored in our memory system which we are able to access quickly and effortlessly, thus implying that stored knowledge must be highly organised to allow us to retrieve the appropriate information for a given situation. This organisation will be determined by the way that information is encoded into memory, and the way knowledge is organised will determine the type of process required to access that information on a future occasion. Craick and Lockhart(1972) argued that any item entering the memory system i ...
    Related: early stages, more effective, effective learning, semantic, trace
  • The Results I Found For Attitudes Towards Suicide Were What Was Expected - 526 words
    The results I found for attitudes towards suicide were what was expected. I ran the significance values for level of education (degree) and for age. However my disk contracted a virus and I lost my data set and was not able to run significance values for my other independent variables (age, income). What I found was that attitudes towards suicide were affected by degree and age. Degree was the most powerful predictor of attitudes towards suicide. I used the Somersd method because both the dependent variable and the independent variable had nominal values. The Somersd value was .187 and was significant at the 001 level. This means that there is a 18.7 or 19% reduction in error in predicting a ...
    Related: suicide, high school, null hypothesis, independent variable, dependent
  • Video Games And Aggression - 1,733 words
    Video Games And Aggression As technology continues to forge ahead concerns about its effects on the populace are raised. Whether it be microwave ovens causing cancer or cell phones causing accidents, people are always interested in researching, and often condemning, these new products. Such is this case with videogames. Ever since Pong swept the nation, scholars have been researching videogames' effects on children. The most popular aspect of videogame research is whether or not games increase aggression. A video game is any console or PC based interactive game, aggression is any thoughts or behaviors related with the intention to cause harm. Contrary to popular belief, there is no reliable ...
    Related: aggression, aggression in children, video, video game, video games, violent video
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