STATISTICS

Mission: After defining the levels of measurement, your superiors were so impressed that

they've decided to give you a bit of the data to analyze to test your skills. The powers-that-be

have sent you an CSV file with heartrate and BMI information on 100 individuals affected by

the epidemic.

1. When you open the file, you notice that a histogram has been created for the heartrate data.

Looking at the histogram, would you say the data for heartrate is normally distributed?

2. Next, you are asked to find some descriptive statistics for the heartrate data. Use the

methods in the practice activity as a guide to help you find the mean, median, and standard

deviation for the heartrate data.

(Rounding Rule: Round your answer to one decimal place further than the given data.)

Mean: Median:

3. Which measure of central tendency is the most appropriate for the heartrate data?

(Rounding Rule: Round your value to two decimal places.)

Z-Score:

4. What will be the z-score for a patient with a heartrate of 61?

Standard Deviation

5. What is the probability that a randomly selected patient will have a heart rate less than 61?

(Rounding Rule: Round probabilities to at least three significant digits.)

6. Now, you wish to make a 90% confidence interval on the mean BMI. What will be the best

point estimate?

Point Estimate:

7. Construct the 90% confidence interval for the mean BMI.

(Rounding Rule: Use the same rounding rule as the mean for each value.)

8. Based on your interval, can we say with 90% confidence that the true mean is equal to 26?

Lower Bound: Upper Bound:

Probability:

IDHeart RateBMI

16529

27131

37820

46829

57627

67528

77529

88532

97823

107425

118423

128234

138028

148525

157719

166928

177130

186723

198317

207824

217220

228218

237727

247520

258825

267228

278022

286625

298026

307824

318021

327925

337428

347930

358420

367827

377225

387022

396526

407815

417935

427931

437723

447127

457829

466924

478326

486828

497529

507127

517522

527630

537126

548018

556629

568322

577225

587627

597922

607825

617329

627522

637321

647031

657421

667027

677123

688023

698225

706220

717219

727027

737530

747516

756426

768132

776824

788830

797528

807725

817923

828129

838026

847824

858134

866323

877628

887428

896325

906727

917931

927824

937323

947525

957621

966720

977717

987824

997923

1006731