assignment 4. test yourself

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The Process of Research in Psychology

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(1) c. (2) a. (3) b. (4) d. (5) There are a lot of ways to test this. One example is to use a measurable work behavior (such as number of reports written in a week or number of clients served per day) as the operational definition of work productivity. The study could compare work productivity change (difference between work productivity before the study starts and work productivity during the study) for workers on different floors of the office (where one floor has the cappuccino machine and the other floor does not). Or work productivity could be measured for a week without the machine and then measured for a week with the machine and compared for the 2 weeks. Both designs involve a quasi-experiment. A true experiment would be difficult to conduct in the workplace. (6a) This is a causal hypothesis; thus, an experiment is the best design. (6b) A manipulated independent variable that includes random assignment of participants to a ginkgo biloba group and a control group that receives a placebo should be included. (7) External; Internal. (8a) archival data. (8b) systematic observation. (8c) survey/questionnaire. (8d) naturalistic observation. (9) negative. (10) Case study.

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Assignment Unit 4 1

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Part 1 You work as a software developer in a company that creates custom software solutions for various clients. Your company has been approached by an educational client who wants to develop a function that calculates the length of the hypotenuse of a right triangle given the lengths of the other two legs as arguments. Your manager has instructed you to use incremental development to create the necessary function and document each stage of the development process. After completing the final stage of development, you have to test the function with different arguments and record the outputs in your Learning Journal. To calculate the length of the hypotenuse of a right triangle, I remember that the Pythagorean Theorem must be utilized (a² + b² = c²), where: a=height of the triangle; b=the length of the triangle; and c=the hypotenuse. In the first stage, I define hypotenuse a & b using the code: def hypotenuse(a, b): return 0 In the second stage, I identify a² and b² so that the Python compiler knows how to calculate by using the code: def hypotenuse(a, b): sqr_a = a ** 2 print(str(“square ‘a’ is: “ + sqr_a)) sqr_b = b ** 2 print(str(“square ‘b’ is: “ + sqr_b)) return 0 I use the exponentiation operator of ** to tell Python that this is an operation involving two numbers and exponent of power, in our case, the power of 2, or squared. In the third stage, I identify ‘sqr_c’ and how I am calculating for the result. def hypotenuse(a, b): a_sqr = a ** 2 b_sqr = b ** 2

c_sqr = a_sqr + b_sqr print(“square c equals: “ + c_sqr) return 0 In the final stage, I start with the command import math to ensure Python knows I am using this coding for calculating a mathematical problem, then I re-enter my coding and add some input coding which will prompt the user to enter values for ‘a’ & ‘b’ in order to calculate the hypotenuse and since I only want to show the value of ‘c’, I need to enter a math function to calculate the square root of c² in order to just show the length of the hypotenuse. import math def hypotenuse(a, b): a_sqr = a ** 2 b_sqr = b ** 2 c_sqr = a_sqr + b_sqr c = math_sqrt(c_sqr) return int(c) The screen shot below shows the initial calculation, using the provided height and length of ‘3’ & ‘4’, showing us the hypotenuse is ‘5’.

Part 2 You are a software developer who wants to establish yourself as a skilled and versatile programmer. To achieve this, you have decided to create a work portfolio that showcases your ability to develop custom software solutions. This portfolio will be your gateway to attract potential clients and establish yourself as a freelancer. As part of your portfolio, you plan to create your own function that does some useful computation using an incremental development approach that will demonstrate your programming skills and problem-solving abilities. You will document each stage of the development process, including the code and any test input and output in your Programming Assignment. For part 2, I chose to calculate the area of a cube. The mathematical formula for finding the area of a cube is 6 * Length of side². I used ‘a’ to represent the lenght of a side. For the first stage, I defined cube with the code: def cube(a): return 0 For the second stage, I needed to identify ‘a’, which is being used to identify the length of a side by coding: def cube(a): cube = 6 * (a ** 2) print(str(“Side of cube ‘a’ is: “)) return 0 In the third stage, I identified the area of the cube and identified a_sqr with this code: def cube(a): a_sqr = a ** 2 cube = 6 * a_sqr print(‘Area of cube equals: “) return 0

For the final stage, I import the math function, and re-enter my code and test my theory with this code: def cube(a): a_sqr = a ** 2 cube = 6 * a_sqr return int(cube) print(str(cube(2))) As shown in the screenshot below, I entered ‘2’ as the length of my side which resulted in a result of ‘24’.

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Course : Programming Fundamentals (CS 1101)

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