Statistics In Psychologist Assignment

Statistics In Psychologist Assignment

  1. A method for testing a claim or hypothesis about a parameter in a population, using data measured in a sample, is called

random sampling

Don't use plagiarized sources. Get Your Custom Essay on
Statistics In Psychologist Assignment
Just from $13/Page
Order Essay

level of significance

hypothesis testing


  1. The one-sample z test is a hypothesis test used to test hypotheses

concerning a single population with a known variance

concerning at least one population

concerning the variance in a population

all of the above

  1. Given the following values: μ = 6.0, M = 7.6, n = 36, σ = 6, conduct a one-sample z test at a 0.05 level of significance. For a one-tailed test, upper-tail critical, what is the decision?

to reject the null hypothesis

to retain the null hypothesis

There is not enough information since the sample size is not given.


  1. ________ allows researchers to describe (1) how far mean scores have shifted in the population, or (2) the percentage of variance that can be explained by a given variable.




effect size


  1. The ________ is an inferential statistic used to determine the number of standard deviations in a t distribution that a sample means deviates from the mean value or mean difference stated in the null hypothesis.

t distribution

t statistic

standard error

degrees of freedom


  1. State the critical value(s) for the following two-tailed t test at a 0.05 level of significance: t(∞).



the same as for a two-tailed z test at a 0.05 level of significance

both ±1.96 and the same as for a two-tailed z test at a 0.05 level of significance


  1. A researcher reports that the mean time it takes to complete an experimental task is 1.4 ± 8.0 (M ± SD) seconds. If the null hypothesis was that the mean equals 1.0, then what is the effect size for this test using estimated Cohen’s d? Statistics In Psychologist Assignment

d = 0.05; small effect size

d = 0.50; medium effect size

d = 1.05; large effect size

There is not enough information to answer this question.


  1. Computing a two-independent sample t test is appropriate when

different participants are assigned to each group

the population variance is unknown

participants are observed one time

all of the above


  1. A researcher has participants rate the likability of a sexually promiscuous person described in a vignette as being male (n = 20) or female (n = 12). The mean likability ratings in each group were 4.0. If the null hypothesis is that there is no difference in likability ratings, then do likability ratings differ at a 0.05 level of significance?

Yes, this result is significant, p < 0.05.

No, this result is not significant, t(30) = 0.

No, this result is not significant, t(30) = 1.00.

There is not enough information to answer this question, because the variance in each sample is not given.

  1. A type of related samples design in which participants are observed more than once is called a

repeated measures design

matched pairs design

matched samples design

both matched pairs design and matched samples design


  1. A researcher records the level of attention among 18 students during an interactive and lecture portion of a single class. If she computes a related samples t test at a 0.05 level of significance (two-tailed test), then what is the critical value for this test?






  1. A researcher computes the mean difference in locomotion in a sample of 12 rats before and 30 minutes after an injection of amphetamine. Rats were placed in a box with infrared beams. The number of times rats crossed the beams was used as a measure of locomotion. The mean difference in locomotion was 6.2 ± 8.4 (MD ± SD), and this difference was significant. What is the effect size for this result using estimated Cohen’s d?

d = 0.74 (medium effect)

d = 1.36 (medium effect)

d = 0.74 (large effect)

d = 1.36 (large effect)


  1. A researcher reports with 90% confidence that 31% to 37% of Americans believe in ghosts. What is the point estimate for this interval?




31% to 37%


  1. In a sample of 20 participants, a researcher estimates the 95% CI for a sample with a mean of M = 5.4 and an estimated standard error (SM) of 1.6. What is the upper confidence limit for this interval?






  1. There is no difference between a point estimate and an interval estimate.




  1. Using a between-subjects ANOVA design,

n · k participants are each observed one time

n participants are observed k times

data are not analyzed between groups

the same participants are observed in each group


  1. A researcher measures attractiveness ratings of a male confederate among 30 women who were told the confederate was either single, dating, or married (n = 10 per group). What are the degrees of freedom for error for the one-way between-subjects ANOVA? Statistics In Psychologist Assignment






  1. A researcher measures differences in romantic feelings among adolescent and adult males. If different participants were in each group, then what type of statistical design is appropriate for this study?

a two-independent sample t test

a one-way between-subjects ANOVA

a two-way between-subjects ANOVA

both a two-independent sample t test and a one-way between-subjects ANOVA


  1. Which of the following post hoc tests is associated with the greatest power to detect an effect?

Schaffé test

Tukey’s HSD test

Bonferroni test

Fisher’s LSD test


  1. A researcher computes a one-way within-subjects ANOVA in which k = 4 and n = 20.

What are the degrees of freedom error for this test?




There is not enough information to answer this question.


  1. A researcher computes the following one-way within-subjects ANOVA table for a study in which k = 3 and n = 12.


State the decision at a 0.05 level of significance.

Source of Variation SS df MS Fobt
Between groups 450      
Between persons     20  
Within groups (error)        
Total 1030      

Reject the null hypothesis.

Retain the null hypothesis.

There is not enough information to answer this question.


  1. There are ____ factors in a 2 × 3 ANOVA design.






  1. A researcher conducts a 2 × 4 between-subjects ANOVA in which 12 participants were observed in each group. If SSB = 18 and  SSE = 264 for this study, then what is the decision for Factor B at a 0.05 level of significance?

Reject the null hypothesis.

Retain the null hypothesis.

There is not enough information to answer this question.


  1. A statistical procedure used to describe the strength and direction of the linear relationship between two factors is called

effect size


a correlation



  1. A researcher measures the following correlation: r = −0.21. What is the value of the coefficient of determination?






  1. A researcher measures the correlation between the frequency of self-esteem (high, low) and health status (lean/healthy, overweight/obese). Based on the frequencies for each nominal category given below, what is the value of the phi correlation coefficient?


Health Status
Overweight/Obese Lean/Healthy
Self-Esteem Low 32 18
High 18 32





  1. Linear regression describes the extent to which _______ predicts ________.

X; Y

the predictor variable; the criterion variable

the known variable; the to-be-predicted variable

all of the above


  1. A researcher reports the following equation for a best-fitting straight line to a set of data points: = −1.01X + 3.24.Which value is the y-intercept? Statistics In Psychologist Assignment





  1. If the coefficient of determination is 0.12 and SSY = 225, then what is the sum of squares regression for an analysis of regression?




There is not enough information to answer this question.


  1. A chi-square goodness-of-fit test shows that the frequencies observed fit well with those that were expected. Hence, the decision was to

reject the null hypothesis

retain the null hypothesis

no decision was made


  1. A researcher asks participants to taste each of three meals and to choose the one they like best. The same foods are in each meal, however the calorie total of each meal is different. One is low in calories, one is moderate in calories and one is high in calories. Based on the observed frequencies given below, what is an appropriate conclusion for this test at a .05 level of significance?


Type of Meal
Low Calorie Moderate Calorie High Calorie
fo 6 7 17
fe 10 10 10

Participants liked the high calorie meal more than the low calorie meal.

Participants liked the low calorie meal less than the moderate calorie meal.

Participants liked the high calorie meal more than was expected.

all of the above


  1. Each of the following is an appropriate test for ordinal data, except

the Mann-Whitney U test

the chi-square goodness-of-fit test

the one-sample sign test

the Friedman test


  1. A professor ranks the grades of students in each of three sections of a statistics course. He computes H = 6.83 for the Kruskal-Wallis H test to test for differences between the sections. What is the decision for this test?

Retain the null hypothesis.

Reject the null hypothesis.

There is not enough information to answer this question.


Statistics In Psychologist Assignment


What Will You Get?

We provide professional writing services to help you score straight A’s by submitting custom written assignments that mirror your guidelines.

Premium Quality

Get result-oriented writing and never worry about grades anymore. We follow the highest quality standards to make sure that you get perfect assignments.

Experienced Writers

Our writers have experience in dealing with papers of every educational level. You can surely rely on the expertise of our qualified professionals.

On-Time Delivery

Your deadline is our threshold for success and we take it very seriously. We make sure you receive your papers before your predefined time.

24/7 Customer Support

Someone from our customer support team is always here to respond to your questions. So, hit us up if you have got any ambiguity or concern.

Complete Confidentiality

Sit back and relax while we help you out with writing your papers. We have an ultimate policy for keeping your personal and order-related details a secret.

Authentic Sources

We assure you that your document will be thoroughly checked for plagiarism and grammatical errors as we use highly authentic and licit sources.

Moneyback Guarantee

Still reluctant about placing an order? Our 100% Moneyback Guarantee backs you up on rare occasions where you aren’t satisfied with the writing.

Order Tracking

You don’t have to wait for an update for hours; you can track the progress of your order any time you want. We share the status after each step.


Areas of Expertise

Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types.

Areas of Expertise

Although you can leverage our expertise for any writing task, we have a knack for creating flawless papers for the following document types.


Trusted Partner of 9650+ Students for Writing

From brainstorming your paper's outline to perfecting its grammar, we perform every step carefully to make your paper worthy of A grade.

Preferred Writer

Hire your preferred writer anytime. Simply specify if you want your preferred expert to write your paper and we’ll make that happen.

Grammar Check Report

Get an elaborate and authentic grammar check report with your work to have the grammar goodness sealed in your document.

One Page Summary

You can purchase this feature if you want our writers to sum up your paper in the form of a concise and well-articulated summary.

Plagiarism Report

You don’t have to worry about plagiarism anymore. Get a plagiarism report to certify the uniqueness of your work.

Free Features $66FREE

  • Most Qualified Writer $10FREE
  • Plagiarism Scan Report $10FREE
  • Unlimited Revisions $08FREE
  • Paper Formatting $05FREE
  • Cover Page $05FREE
  • Referencing & Bibliography $10FREE
  • Dedicated User Area $08FREE
  • 24/7 Order Tracking $05FREE
  • Periodic Email Alerts $05FREE

Our Services

Join us for the best experience while seeking writing assistance in your college life. A good grade is all you need to boost up your academic excellence and we are all about it.

  • On-time Delivery
  • 24/7 Order Tracking
  • Access to Authentic Sources
Academic Writing

We create perfect papers according to the guidelines.

Professional Editing

We seamlessly edit out errors from your papers.

Thorough Proofreading

We thoroughly read your final draft to identify errors.


Delegate Your Challenging Writing Tasks to Experienced Professionals

Work with ultimate peace of mind because we ensure that your academic work is our responsibility and your grades are a top concern for us!

Check Out Our Sample Work

Dedication. Quality. Commitment. Punctuality

It May Not Be Much, but It’s Honest Work!

Here is what we have achieved so far. These numbers are evidence that we go the extra mile to make your college journey successful.


Happy Clients


Words Written This Week


Ongoing Orders


Customer Satisfaction Rate

Process as Fine as Brewed Coffee

We have the most intuitive and minimalistic process so that you can easily place an order. Just follow a few steps to unlock success.

See How We Helped 9000+ Students Achieve Success


We Analyze Your Problem and Offer Customized Writing

We understand your guidelines first before delivering any writing service. You can discuss your writing needs and we will have them evaluated by our dedicated team.

  • Clear elicitation of your requirements.
  • Customized writing as per your needs.

We Mirror Your Guidelines to Deliver Quality Services

We write your papers in a standardized way. We complete your work in such a way that it turns out to be a perfect description of your guidelines.

  • Proactive analysis of your writing.
  • Active communication to understand requirements.

We Handle Your Writing Tasks to Ensure Excellent Grades

We promise you excellent grades and academic excellence that you always longed for. Our writers stay in touch with you via email.

  • Thorough research and analysis for every order.
  • Deliverance of reliable writing service to improve your grades.
Place an Order Start Chat Now

Open chat
WhatsApp chat +1 563-600-3041
Dr.Nursing Papers
We will write your work from scratch and ensure it's plagiarism-free, you just submit the completed work.