Any data value with a z-score less than –3 or greater than +3 is considered to be a(n) _____.

a. z-score value
b. outlier
c.statistic
d.whisker

The College Board originally scaled SAT scores so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100. Assuming scores follow a bell-shaped distribution, use the empirical rule to find the percentage of students who scored less than 400.

• a.68%
• b.16%
• c. 84%
• d. 32%

Which Excel command will return all modes when more than one mode exists?

a. MODES b. MODE c. MODE.SNGL d. MODE.MULT

n a survey of patients in a local hospital, 62.42% of the respondents indicated that the health care providers needed to spend more time with each patient. Who makes up the sample? ​

a.All patients in a local hospital

b.All survey respondents

c.Cannot be determined from the information given

d.Hospital patients

A _____ determines how far a particular value is from the mean relative to the data set’s standard deviation.

a.percentile
b.variance
c.z-score
d.coefficient of variation

The act of collecting data that are representative of the population data is called _____.

a.sample data
b.sources of data
c.population sampling
d.random sampling

Scores on Ms. Bond's test have a mean of 70 and a standard deviation of 11. Michelle has a score of 48. Convert Michelle's score to a z-score. (Round to two decimal places if necessary.)

a.2 b.–2 c.1.33 d.41.64

For data having a bell-shaped distribution, approximately _____ percent of the data values will be within one standard deviation of the mean.

Compute the mean of the following data.

56, 42, 37, 29, 45, 51, 30, 25, 34, 57

Which of the following gives the proportion of items in each bin?

a.Class size b.Bin proportion c.Frequency d.Relative frequency