A national retail chain exports weekly sales data from both its in-store and online systems. After merging the two datasets, the analyst notices that a few customer transactions are listed more than once. Which of the following is the best first step in cleaning this data before performing sales analysis by customer?

An e-commerce manager wants to visualize the number of orders received each day over the last three months to evaluate trends and identify any seasonal dips or spikes. Which visualization would be the most appropriate for this purpose?

A marketing team is preparing a report on campaign performance for customers in California. Their dataset includes customer responses from across the country. Which of the following would be the most appropriate cleaning action to take?

A sales manager wants to display just one number—the total number of new accounts opened this quarter—at the top of a dashboard for quick reference. Which visualization is most appropriate?

Question 3: (for a Bar Chart) What is an example of what this chart could be used for?

A food delivery company wants to group delivery data by city to evaluate performance. However, cities are listed in inconsistent formats: “San Francisco,” “san francisco,” and “SanFran.” What is the best data cleaning step before grouping by city?

An HR department surveys employees on job satisfaction using a 1–10 scale. They want to visualize the distribution of responses to see which ratings are most common and whether the scores are skewed. Which chart should they use?

Convert 1.75 lb to grams _________________ Useful Conversions Factors and Formulas Density  D = mass/volume Mass  1 lb = 16 oz = 0.4569237 kg = 453.9 g Length 1 in = 2.54 cm 1 ft = 12 in = 0.3048 m  1 mi = 1.609 km 1 km = 0.6215 mi 1 m = 0.1 dm = 0.01 cm = 0.001 mm  Volume 1 mL = 1 cm3 = 0.001 L Pressure 1 atm = 760 mmHg = 760 torr = 101.325 Pa Temperature oC = 5/9 x (oF – 32oF) oF = 9/5 x (oC)  + 32oF K = oC + 273.15 Mass Number (A)  Mass number (A) = =atomic number (Z) + Number of neutrons (no) Molarity Molarity (M) = moles of solute/ Liters of solution Dilution M1V1 = M2V2  

A 25-year-old woman in her fifth month of pregnancy has a blood pressure of 100/70 mm Hg. In reviewing her previous examination, the nurse notes that her blood pressure in her second month was 124/80 mm Hg. In evaluating this change, what does the nurse know to be true?

The nurse is caring for a 47-yr-old female patient who is comatose and is receiving continuous enteral nutrition through a soft nasogastric tube. The nurse notes the presence of new crackles in the patient’s lungs. In which order will the nurse take action?  a. Check the patient’s oxygen saturation.b. Notify the patient’s health care provider.c. Measure the tube feeding residual volume.d. Stop administering the continuous feeding.