A developmental psychologist conducts a research study comparing height on a sample of 50 kindergartners. The psychologist is interested in how nutritious breakfast and sugary breakfast plays a role in growth. Each kindergartner was randomly assigned to one of two groups. In one group, the child was provided with a well-balanced breakfast including yogurt, fruit and oats, while the second group of children were provided with sugary cereals, muffins, and juice. The independent variable is ______________________ This is a (true or quasi) independent variable ____________________ This independent variable has __________ levels The dependent variable is ___________________ If the researcher used a graph to show the obtained relationship between the independent variable and dependent variable, what kind of graph would be appropriate? __________________________________________

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.