In the data set below, what is the mean ( )? X f 5 4 4 2 3 1 2 1 1 2
a. 4
b. 3.5
c. 3
d. 2.5
ANS: B
The measures of central tendency are mode, median (MD), and mean ( ). The mean is the arithmetic average of all a variable's values in a study and is the most commonly reported measure of central tendency. The mean is the sum of the scores divided by the number of scores being summed. Mean ( ) = ÷ N = 35 ÷ 10 = 3.5.
You might also like to view...
A student is pursuing a graduate nursing education with preparation as a generalist, functioning at the micro-systems level, and assuming accountability for health care outcomes for a specific group of clients
Which educational preparation is this student receiving? a. Clinical nurse leader b. APHN c. NP d. Doctor of Nursing Practice (DNP)
A caregiver for a child who is undergoing chemotherapy for cancer shares with the nurse that the child's temperature is being taken rectally every 4 hours. Which of the following is the nurse's best response?
a. "Good for you for paying close attention to whether your child has a fever or not." b. "Once a day, at the same time each day, is the best practice for taking the temperature." c. "It is not necessary to take the temperature so often. You need only take the child's temperature if you suspect fever." d. "Stop this practice, because the thermometer can cause breaks in the rectal mucosa and cause bacteria to enter the bloodstream, resulting in sepsis or abscess."
Which cytokines activated in childhood asthma produce an allergic response?
a. Interleukin (IL)–1, IL-2, and interferon-alpha (IFN-?) b. IL-8, IL-12, and tumor necrosis factor-alpha (TNF-?) c. IL-4, IL-10, and colony-stimulating factor (CSF) d. IL-4, IL-5, and IL-13
The nurse notes that the only ECG for a 55-year-old male client scheduled for surgery in two hours is dated two years ago. The client reports that he has a history of "heart trouble," but has no problems at present. Hospital protocol requires that those over 50 years of age have a recent ECG prior to surgery. What nursing action is best for the nurse to implement?
A) Ask the client what he means by "heart trouble." B) Call for an ECG to be performed immediately. C) Notify surgery that the ECG is over two years old. D) Notify the client's surgeon immediately.