Tutor profile: Donna D.
What is the difference between effect and affect?
Put simply, effect is a noun and affect is a verb. For example, the wind affects my mood. It has a negative effect on me.
Subject: Basic Math
How long would it take a train traveling at 60km/hr to travel 240kms?
We are going to be using D = ST here. That's Distance = Speed x Time. We know what our distance and speed are, and the question asks us to solve for time. So we'll put what we know into our formula first: 240 = 60 x Time We're going to use the rule that states whatever we do to one side of the equation, we do to the other side. There are other rules that we could use here too. We want to get Time on the one side by itself, which means we need to deal with that 60 we have there. The opposite of multiply is divide, so we'll do that to both sides. 240/60 = (60 x Time)/60 Let's solve that! 4 = Time Therefore, it's going to take 4 hours for the train to travel 240kms at 60km/hr.
What is the difference between experimental and non-experimental research designs?
The biggest difference between experimental and non-experimental designs is the manipulation of variables. Researchers manipulate variables in an experimental design, and they do not do that in a non-experimental design. Variables can be manipulated in many different ways, researchers could assign groups of children to receive different reading instruction, for example. Sometimes researchers use non-experimental designs because they cannot randomly assign participants. For example, we cannot randomly assign half of our participants to suffering from anxiety, that’s impossible and unethical.
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