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A statistics professor kept attendance records and recorded the number of absent students per class. This data is displayed in the following histogram with the frequency of each number of absent students shown above the bars.How many statistics classes had two or fewer students absent?

The following contingency table shows the number of adults with credit scores above and below 725 as well as their marital status. Credit Score Single (C) Married (D) Below 725 (A) 39 33 725 or above (B) 15 63         Determine whether Events A and C are independent or dependent. 

Consider the following frequency distribution.Number of MinutesFrequency0 to less than 565 to less than 1098 to less than 131413 to less than 182Which rule for constructing a frequency distribution using grouped quantitative data has been violated?

The number of iPhones sold today at an Apple store is an example of ________ data.

The main drawback to using secondary data is that ________.

________ display the proportion of observations of each class relative to the total number of observations.

Class ________ are the number of observations for each class of a frequency distribution using grouped quantitative data.

________ data use descriptive terms to measure or classify something of interest.

Mannitol salt agar (MSA) only allows the growth of halophiles. Among the halophiles, mannitol fermenters release acid that turns the pH indicator yellow; mannitol nonfermenters leave the medium red. Onto MSA you inoculate a halophilic mannitol fermenter and a nonhalophilic mannitol nonfermenter.  You see growth on only one of the plates. Given this scenario, the MSA acts as a _____ medium.

You perform an entire gram stain procedure from start to finish.  After you finish you, realize you forgot to perform the step containing the Iodine mordant.  Because of your error, what color would the gram-positive and gram-negative cells be on your slide?