Posted: November 18th, 2022

Time to Practice – Week One

Question description

Some questions in Part A require that you
access data from Statistics for People Who (Think
They) Hate Statistics. This data is available on the student website under
the Student Test Resources link.
1. 
By hand, compute the
mean, median, and mode for the following set of 40 reading scores:
SUMMARY

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32

43

42

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44

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Will Anyone Find Out I Used You?

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Do You Rely on AI?

Not even a little—our writers are real-deal experts with degrees, crafting every paper by hand with care and know-how. No AI shortcuts here; it’s all human skill, backed by thorough research and double-checked for uniqueness. You’re getting authentic work that stands out for all the right reasons.

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Why Are You Top for Research Papers?

Our writers are Ph.D.-level pros who live for nailing the details—think deep research and razor-sharp arguments. We pair that with top plagiarism tools, free revisions to tweak anything you need, and fast turnarounds that don’t skimp on quality. Your research paper won’t just shine—it’ll set the bar.

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Who’s Behind My Essays?

You’re in good hands with degree-holding pros—many rocking Master’s or higher—who’ve crushed our tough vetting tests in writing and their fields. They’re your partners in this, hitting tight deadlines and academic standards with ease, all while tailoring every essay to your exact needs. No matter the topic, they’ve got the chops to make it stellar.

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Is My Paper Original?

100%—we promise! Every paper’s written fresh from scratch—no AI, no copying—just solid research and proper citations from our expert writers. You can even request a plagiarism report to see it’s 95%+ unique, giving you total confidence it’s submission-ready and one-of-a-kind.

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Can You Do Any Citation Style?

Yep—APA, Turabian, IEEE, Chicago, MLA, whatever you throw at us! Our writers nail every detail of your chosen style, matching your guidelines down to the last comma and period. It’s all about making sure your paper fits academic expectations perfectly, no sweat.

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2. 
Compute the means for the
following set of scores saved as Ch. 2 Data Set 3 using IBM®SPSS® software. Print out a copy of the output.

Hospital size (number of
beds)

Infection rate (per 1,000
admissions)

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We can crank out a killer paper in 24 hours—quality locked in, no shortcuts. Just set your deadline when you order, and our pros will hustle to deliver, even if you’re racing the clock. Perfect for those last-minute crunches without compromising on the good stuff.

234

1.7

214

2.4

165

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For sure! Our writers with advanced degrees dive into any topic—think quantum physics or medieval lit—with deep research and clear, sharp writing. They’ll tailor it to your academic level, ensuring it’s thorough yet easy to follow, no matter how tricky the subject gets.

3.1

436

5.6

432

4.9

How Do You Meet Prof Standards?

We stick to your rubric like glue—nailing the structure, depth, and tone your professor wants—then polish it with edits for that extra shine. Our writers know what profs look for, and we double-check every detail to make sure it’s submission-ready and grade-worthy.

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5.3

276

5.6

What’s Your Editing Like?

Send us your draft and tell us your goals—we’ll refine it, tightening arguments and boosting clarity while keeping your unique voice intact. Our editors work fast, delivering pro-level results that make your paper pop, whether it’s a light touch-up or a deeper rework.

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1.2

512

3.3

553

Can You Pick My Topic?

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3. 
You are the manager of a
fast food store. Part of your job is to report which special is selling best to
the boss at the end of each day. Use your knowledge of descriptive statistics
and write one paragraph to let the boss know what happened today. Use the
following data. Do not use IBM®SPSS®software to compute the statistics needed; rather, do
it by hand. Include a copy of your work.

Special number

Sold

Cost

Huge Burger

20

Do You Do Quick Revisions?

Yep—need changes fast? We’ll jump on your paper and polish it up in hours, fixing whatever needs tweaking so it’s ready to submit with zero stress. Just let us know what’s off, and we’ll make it right, pronto.

$2.95

Baby Burger

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$1.49

Chicken Littles

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Porker Burger

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$2.95

Yummy Burger

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$1.99

Coney Dog

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20

$1.99

Total specials sold

119

4. 
Suppose you are working
with a data set that has some different (much larger or much smaller than the
rest of the data) scores. What measure of central tendency would you use and
why?
5. 
For the following set of
scores, compute the range, the unbiased and the biased standard deviations, and
the variance. Do the exercise by hand.
31, 42, 35, 55, 54, 34, 25, 44, 35
Why is the unbiased
estimate greater than the biased estimate?
6. 
Use IBM®SPSS®software to compute all the
descriptive statistics for the following set of three test scores over the
course of a semester. Which test had the highest average score? Which test had
the smallest amount of variability?

Test 1

Test 2

Test 3

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Progressive delivery is a cool option where we send your paper in chunks—perfect for big projects like theses or dissertations. You can even pay for it in installments. It’s just 10% extra on your order price, but the perks are worth it. You’ll stay in closer touch with your writer and can give feedback on each part before they move to the next. That way, you’re in the driver’s seat, making sure everything lines up with what you need. It saves time too—your writer can tweak things based on your notes without having to redo huge sections later.

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I received some comments from my teacher. Can you help me with them?

Absolutely! If your teacher’s got feedback, you can request a free revision within 7 days of approving your paper—just hit the revision request button on your personal order page. Want a different writer to take a crack at it? You can ask for that too, though we might need an extra 12 hours to line someone up. After that 7-day window, free revisions wrap up, but you can still go for a paid minor or major revision (details are on your order page). What if I’m not satisfied with my order? If your paper needs some tweaks, you’ve got that free 7-day revision window after approval—just use the “Revision” button on your page. Once those 7 days are up, paid revision options kick in, and the cost depends on how much needs fixing. Chat with our support team to figure out the best way forward. If you feel the writer missed the mark on your instructions and the quality’s off, let us know—we’ll dig in and sort it out. If revisions don’t cut it, you can ask for a refund. Our dispute team will look into it and figure out what we can offer. Check out our money-back guarantee page for the full scoop.

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7. 
This practice problem uses
the data contained in the file named Ch. 3 Data Set 3. There are two variables
in this data set.

Variable

Definition

Height

Height in inches

Weight

Weight in pounds

Using IBM®SPSS®software, compute all of the
measures of variability you can for height and weight.
8. 
Review the following
frequency distribution. Create a histogram either by hand or by using some
other application such as a Microsoft®Excel®document.

Class interval

Frequency

90–100

12

80–89

14

70–79

20

60–69

24

50–59

28

40–49

29

30–39

21

20–29

15

10–19

17

0–9

12

9. 
A third-grade teacher is
looking to improve her students’ level of engagement during group discussions
and instruction. She keeps track of each of the 15 third graders’ number of
responses every day for 1 week. This information is available in Ch. 4 Data Set
2. Use IBM®SPSS®software to create a bar chart (one bar for each day).
10. 
Identify whether these
distributions are negatively skewed, positively skewed, or not skewed at all,
and why.
a. 
This talented group of
athletes scored very high on the vertical jump task.
b. 
On this incredibly crummy
test, everyone received the same score.
c. 
On the most difficult
spelling test of the year, the third graders wept as the scores were delivered.
11. 
For each of the following,
indicate whether you would use a pie, line, or bar chart, and why.
a. 
The proportion of freshmen,
sophomores, juniors, and seniors in a particular university
b. 
Change in GPA over four
semesters
c. 
Number of applicants for
four different jobs
d. 
Reaction time to different
stimuli
e. 
Number of scores in each of
10 categories
From Salkind (2011). Copyright © 2012 SAGE. All Rights
Reserved. Adapted with permission.

Part B

Complete the questions below. Be specific and provide
examples when relevant.
Cite any sources consistent with APA guidelines.

Question

Answer

Salkind (2011) describes statistics as a “set of tools”
(p. 18). How do behavioral scientists use those tools?

How would you use descriptive statistics to report the
effectiveness of a baseball team? How would you use inferential statistics to
report the effectiveness of a baseball team? In this example, what is the
sample and what is the population?

What does a measure of central tendency tell us about a
data set? Identify the three common measures of central tendency used in
descriptive statistics and give an example of each. How do you calculate
them?

What is variability in a data set? Identify three measures
of variability used in descriptive statistics, explain how to calculate each,
and give an example of each.

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