A statistics professor teaches two sections of the same course: a morning section and an afternoon section. Her morning section has 50 students whereas the afternoon section has 60 students. The professor was interested in comparing the final exam performance of the two sections. Below are the side-by-side boxplots of the exam performance for the two sections.  How many variables have been used in making above plot? 

The most difficult objective questions for teachers to write are

Which is not recommended in teaching time?

The prokaryotic chromosome is located in a region called the:

 Oxygen gas (O2 ) was a major component of Earth’s first atmosphere

Which piece of evidence supports the endosymbiotic origin of mitochondria?

A dichotomous key is used to:

Which of the following is a characteristic of the plasmodial slime molds?

List the taxonomic levels in order from most inclusive to least inclusive:

A nurse is caring for a client who has hypertension and has been prescribed hydrochlorothiazide (HCTZ). The client asks how this medication will help manage their condition. Which of the following responses by the nurse demonstrates an understanding of the therapeutic effects of hydrochlorothiazide (HCTZ)?