Unit 2 Explain The Difference Between Independent And Multiple Independent Variables

Describe what you understand by ‘independent variable’ and ‘dependent variable’ in a scientific study? ( 5 points) An independent variable is something you have control over, what you can choose and manipulate. It is a variable that stands alone and doesn’t change by other variables. Although in some cases, you may not be able to manipulate the independent variable. It could be already there and or fixed. A dependent variable is the variable that’s being tested in an experiment. If the experimenter changes the independent variable, the change in the dependent variable is observed and recorded. For example a scientist is testing the effect of light and dark on the behavior of moths by turning a light on and off. The independent variable is the amount of light and the moth’s reaction is dependent variable. A change in the independent variable (amount of light) directly causes a change in the dependent variable (moth

designing an experiment, we have to design an experiment and we need to confirm the

Analysis of variance (ANOVA) is an inferential procedure used to test a hypothesis by evaluating the mean differences between two or more treatment conditions (Gravetter & Wallnau, 2014). Since ANOVA can have multiple variables, independent and quasi-independent variable are called factors; and the various conditions are called levels of the factor (Gravetter & Wallnau, 2014). Therefore, researchers would use ANOVA when there are multiple factors. ANOVA can basically be used anytime a t-test would be used, but can also be used by researchers when there are more than

In my experiment, I decided to look at how or if different liquids effect the growth of a tomato plant. The independent variables in this experiment were the liquids that the tomato plants were watered with. The dependent variables in this experiment were the speed that the plants grew and the amount that they grew throughout the two weeks that they were measured. I hypothesized that if the tomato plant is watered with river water, then the plant will grow the tallest.

Secondly, creating tests that will ensure that the specified work product meets the specific requirements. Lastly, carry out the tests on the work product to ensure the specific requirements are achieved.

Reviewed and analyzed all the Functional Requirements Specifications, High Level Design, Detail Level design and Business Functional Specification document to develop test plans and test cases.

* The Independent part is what you, the experimenter, changes or enacts in order to do your experiment.  The dependent variable is what changes when the independent variable changes - the dependent variable depends on the outcome of the independent variable.

level. Exploring compounded levels of analysis may facilitate the goal of a more comprehensive and the appreciative of treatment effects

Your take on designing an experiment was cool. I always thought that people were heavily influenced by other people that they're around, but i never thought of a way to measure it. In your experiment I believe your two independent variables are the different majors and school year the participant is in (Senior, Junior, etc). The dependent variable is keeping track of whether or not each individual changes his or her answer to the question based on the answers of the other peole in the

Variables are used to analyze, interpret and provide sense and meaning to a descriptive study or experiment. Selecting variable is a very important part of experimental study. Variables provides the understanding of what is studied and helps to interpret the studies. In a study, it is important to clearly differentiate the difference between the dependent and independent variable. Variables are divided into dependent and independent variables. In an experimental study, a variable creates changes to other variable such as memory, attention, or behavior. Changing the dependent variable in a study can

Once the purpose of the measure has been established, one can define the content of the measure, which will be established by the content domain. A test developer fist operationally defines the content domain (Moerdyk, 2009). Secondly the purpose is considered and various methods are used according to the settings (rational approach and empirical criterion keying approach), these can be combined as well (Foxcroft & Roodt, 2009). The next step in the planning phase would be to develop the test plan. In order to develop the test plan the design would need to be considered. The design is considered according to two aspect which are; the stimulus to the test taker- response and the method for the response. Item formats which a test- taker could respond to are as follows; Open ended items such as narrative or essays in which there is no limitation, Forced choice items such as dichotomous, likert scale questions and ipsative format; sentence completion items and performance based items. In all items one would consider the time limits to be imposed which would affect the response. If I am interested in assessing personality, a performance based item would be used. Depending on the method for response, who is involved in the administration of calculating the test results, different approaches would be taken. For example in the case of which one answer is correct, an

Throughout the Master’s program here at Walden I have acquired the knowledge and skills to be a successful and innovative instructional designer. It gave me the essential skills and competencies needed to enter the field of Instructional Design. The challenges that I saw coming into the program is that to be a good Instructional designers you need to be an expert in interpersonal communication and to a good problem solver and a critical thinker. Instructional designers must meet the expectations of their learners by applying educational knowledge and be able to identify key issues in the best possible way, to be able to develop the most appropriate eLearning solutions. This can be a very challenging if you are a new instructional designer, and don’t have the experience or educational knowledge. However, through this program I learned that in order to design and develop a powerful course you must have clear learning objectives, because it will give you an idea on where to start and it helps you not to lose the focus of the

Part 1 Cofounding Factors Cofounding factors are extraneous variables that correlate either positively or negatively with both eh dependent and independent variable within a study. Any research method and analysis must account for these variables through the actual design of the study or through statistical means that accounts for them. Operational cofound is one that can occur in both experimental and nonexperimental design when a measure for one variable inadvertently measures something else as well. A procedural cofound occurs in a lab experiment when the researchers allows another variable to change along with the manipulated variable in question. Perhaps the best way of thinking about this issue is that there are variables that tend to influence the outcome of the experiment that may add error but are of no real interest to the hypothesis. One of the most common is when the designer of the experiment cannot randomly assign participants to groups and some of the individual differences (e.g. height, weight, personality, genetics, predisposition to disease, etc.) act as variables (Mayrent, 1987).

Virtual reality plays an important role in medical area especially in the medical area. As we know that surgery is one of the way of curing a patient through remove or replace a particular organ. Every surgery is taking risk for the patient and surgeon. In order to make the surgery more and more secure and low risk scientist tried lots of the methods such as preoperational plan before surgery via the image scanning likes having endoscopy imaging for digestive surgery, and used minimal invasive surgery to make the incision for the body to look

Independent: the independent variable in the psychology discipline is increase in children playtime; this is because children’s learning behaviours and social skills relies on how much playtime children’s get.