Descriptive Statistics
Test subjects were 53.3% male and 46.7% female, as shown in the bar graph on the accompanying Excel spreadsheet. The test population has a mean age of 15.9 years (standard deviation=0.80). These descriptive statistics validate the randomized population of the research study, as the population is almost evenly split between males and females and the mean age is also very close to the median age (16) of the study's population (Healy, 2009). As ACT and SAT scores vary in their nominal values (a top score on the ACT test is 36, a top score on the SAT is 2400), scores were recorded as percentages of the total score to enable meaningful analysis of varying means (i.e. A score of 29 on the ACT and of 1920 on the SAT would both be recorded as 0.80) (Kaplan, 2004). Mean scores on the ACT were 0.47 (standard deviation=0.27), while mean scores on the SAT were 0.41 (standard deviation=0.31).
T-Test
A significance level of 0.05 was used for this test, which is in keeping with the data population size and the level of data collected (Healy, 2009). A t-test is commonly used to determine if two means differ significantly, and is well suited for the purpose of comparing academic scores given the ratio level of measurement (Healy, 2009). The t-test was conducted using the ACT score mean as the "control"...
Health Stats Healthcare Premium Increases: Summary Statistics and Explanations A recent survey asked forty respondents how much of a monthly premium increase they could/would absorb before leaving their current healthcare plan. The sample responses are given as: The mean of this sample is 47.23, with a standard deviation of 10.05. Assuming a normal distribution, the maximized level of retention with an increase in premiums would not necessarily occur at the mean itself. Moving
Figure 1 shows that the majority of readings surrounded this mean and median cluster on both sides to symmetrical degree, as opposed to appearing grouped highly above or below. The result of this all is a relatively high value for the first standard deviation, which corresponds to meaningful Kurtosis but very little skew -- Table 1 reveals less than .01 skewness, which means the results are highly symmetric (Brown,
semi-structured interviews in this study. The subjects were randomly divided into two experimental groups and one control group. The treatment and control groups were as follows: (A) Family therapy plus Social Skills Training (SST) plus a placebo (B) Administration of Fluoxetine; (C) Family therapy plus Social Skills Training (SST) (Control Group). All subjects were assessed and treated for substance abuse problems regardless of group assignment. A total of 9
Media Exposure in Body Image Attitudes Using a One-Way Design Research Methods- Investigating the effects of media exposure in body image attitudes using a one-way design This research tries to analyze the connection in between media use and body discontentment by comparing the media with the internal element of self-confidence and various other social elements such as peer and adult mindsets. A sample of 30 female undergraduates finished measures of media
United States is in the middle of a war on drugs, and has been for several decades. Yet, many believe that we are losing this war, often because of the impractical approach legislation has taken in response to curb growing rates of addiction in the United States; however, drug addiction continues to be a major social problem in the United States. Research shows that there is a direct correlation
Economy Stats The economic statistics cited by Patricia Cohen are meant to put a positive spin on an otherwise doubly-seasonally adjusted economy still limping under the Federal Reserve's guidance and policy of quantitative easing. Cohen calls it "strong job growth data," but there are scores of other stats that researchers use to indicate just the opposite, such as the correlative study of Labor Force Participation Rate and People not in the
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