Blog

ou have loaded a GeoDataFrame named county_shapes. You want to combine it with a standard Pandas DataFrame df that contains COVID-19 data. Which of the following statements about the merge operation merged_gdf = pd.merge(county_shapes, df, …) is TRUE?

You are iterating through sentences to capture specific sentiment metrics. Review the code below: for sentence in blob.sentences:    val = sentence.sentiment[0]    # … further processing What data does the variable val hold, and why?

You are trying to filter a GeoDataFrame to only show counties with a high case count: high_risk = gdf[gdf[‘Total_Cases’] > 1000] What happens to the spatial data (the ‘geometry’ column) in the new variable high_risk?

You are creating a Choropleth map using the code below. What is the specific purpose of the column argument? tx.plot(column=’Total_Cases’, legend=True)

In a large Midwestern university (the class of entering freshmen is 6000 or more students), an SRS of 100 entering freshmen in 1999 found that 20 finished in the bottom third of their high school class. Admission standards at the university were tightened in 2000. In 2001, a SRS of 100 entering freshmen found that 10 finished in the bottom third of their high school class. Is there evidence that the proportion of freshmen who graduated in the bottom third of their high school class in 2001 has been reduced, as a result of the tougher admission standards adopted in 2000, compared to the proportion in 1999? Use a significance level of 1% Be sure to be clear what your variables mean. a) State the null and alternative hypotheses. Ho:____________________ (in symbolic form) Ha:_____________________(in symbolic form if appropriate)    

The boxplots below show temperatures for six cities. Each city’s boxplot was made from 12 temperatures: the average monthly temperature over a period of years. Answer the following questions using your best approximation of numerical values and using appropriate units of measurement. b) What is the IQR for the temperatures recorded in Boston? Show your work, and approximate when needed:

Suppose the null hypothesis is that the particular high school a person goes to and whether or not that person goes to college are independent of each other. Suppose the alternative hypothesis is that the particular high school a person goes to and whether or not that person goes to college are dependent of each other. The P-value for the test is 0.071. For each of the following determine if it is a valid or invalid interpretation of the P-value.   b.   We will need to check if the data is random and that n > 30.

Approximately how much does the brain weigh in pounds in an average human?

What does the term Vagus (referring to cranial nerves) mean ?

Which of the following hormone-signaling pairs is correctly matched with its mechanism?