A gardener uses a pesticide to kill leaf borers. After each week of use, more insects are killed.
What are the independent and dependent variables?
Independent variable is the amount of pesticide used and the dependent variable is number of insects that are killed.
A dependent variable is one that can't be directly controlled by us and its output depends on the independent variable.
Whereas independent variable is one that can be directly manipulatedc/ in an experiment and change in it will also affect the dependent variable.
A gardener uses a pesticide to kill leaf borers. After each week of use, more insects...
you can use. STEPS FOR CREATING A LINE GRAPH 1. Determine the range and interval for each variable. For each variable, find the difference between the lowest and highest value, then divide this difference by the number of squares that 2. Chart the independent variable on the X-axis and the dependent variable on the Y-axis. 3. Label each axis with a name and the unit of measure. The labels should describe what is being graphed on each axis and what...
Explain when you would you use a dependent samples t-Test rather than an independent sample t-Test? What are the benefits and problems with each design? Be specific! Using similar IVs and DVs, design a study that uses a dependent samples t-Test design and a study that uses an independent samples t-Test (base them on the same general topic – this can be any topic, not just the “how fast” topic)). Make sure to note your independent and dependent variables for...
Part I. Understanding What Makes an Experiment 1) Please identify the 3 vital components of an experiment. After identifying each component, write at least one sentence elaborating on/explaining each component (10 points) Answer – The most conventional type of experiment involves three major pairs of components: independent and dependent variables, pretesting and post testing, and experimental and control groups. An experiment examines the effects of independent variable on a dependent variable. 1- Manipulate at least one independent variable. This means...
1. 48 soybean seedlings at the 3-leaf stage, divided at random into 8 groups of 6. Each group of 6 was placed into a tray where it remained for the duration of the experiment. Four groups of 6 were chosen at random and placed in a chamber and exposed to filtered air containing 700 ppm (parts per million) carbon dioxide for 16 weeks. The other 4 groups of 6 were placed in an identical chamber and exposed to filtered air...
For each of the following hypotheses, identify the 1) independent and dependent variables, 2) give an operational definition for each, and 3) decide what research strategy(cross-sectional, longitudinal, or sequential), 4) type of design (experimental or nonexperimental), and (5) method of data collection (observational, individual testing, survey, or questionnaire) you would use to test each hypothesis. TO SUBMIT YOUR RESPONSES: click on "submits answers"; copy/paste text from assignment into text box; include your responses. Infants cared for in a home setting...
22. In which situation would it be inappropriate to use a nonparametric test? a. The sample size is small and the population distribution might be skewed. b. The dependent variable is scale. c. The dependent variable is nominal. d. The dependent variable is ordinal. 23. A chi-square test for independence is an appropriate statistical test to use when the study has: a. one nominal dependent variable. b. one scale independent variable. c. two nominal dependent variables. d. two scale independent...
John is a gambler who visits the casino each week. Each Friday, after John is paid at work, he will withdraw $150 to play a particular dice game at the casino. He will pay $50 to roll a dice. If the dice roll is between 1 and 3, he gets nothing. If a 4, 5 or 6 is rolled, the casino will give him $50, $100, and $150 respectively. John will play as many rounds as needed until he either...
1. Calculate the survival rate for each group in figure 1. Use
the following formula: percent survival= (surviving
rabbits/#beginning rabbits) *100
For example, if a group had began with 10 rabbits and only 3
survived, the percent survival would be 3/10 *100 or 30%. Which
group has the highest survival rate? Which group had the
lowest?
2. Use your results to write an overall conclusion to the
Rabbit Island Experiment. Also develop an answer to each of Dr.
Trudeau’s questions....
the
second picture is added and its more clear.
1 2 1 2 14 24 18 TO 1 . 17 10 16 a What is the independent variable? What is the dependent variable? What test did you use to analyze the data? d. is the best cant How do you know? Write the statistical notation in APA style Report the findings in 1-3 ans. Make sure to include the independent the dependent entstand please answer the questions also any way...
Patients are randomly assigned to undergo psychotherapy or behavioral therapy. After 20 therapeutic sessions, each patient takes a mental health questionnaire. What test would be used to see if there are differences in mental health at the end of therapy? (a) z test (b) t test for one sample (c) t test for two independent samples (d) t test for two related samples A researcher wants to test the hypothesis that visualization improves short-term memory. She randomly selects a group...