Note that not all students in the same class have the same exact number of assessments. Then import into your blog database as follows:. For this problem, assume that a city name that appears in more than one state represents two separate cities. After that, you just need to sort. Start by downloading the handout zip file for this problem. You will need to probably change your projection to send more info through than just that first character. You need to group twice to solve this problem.

This involves calculating an average for each student in each class of all non-quiz assessments and then averaging those numbers to get a class average. Please choose your answer below for the most prolific comment author:. Prefered Cities to Live! In this assignment you will use the aggregation framework to find the most frequent author of comments on your blog. We will be using a data set similar to ones we’ve used before. Some students have three homework assignments, etc. Different states might have the same city name.

A city might have multiple zip codes. This involves calculating an average for each student in each class of all non-quiz assessments and then averaging those numbers to get a class average.

For this problem, we uomework used a subset of the data you previously used in zips. Those students achieved a class average of You will need to probably change your projection to send more info through than just that first character. For example, to extract the first character from the city field, you could write this pipeline:.

At the end I just want to say if you want to learn mongoDB, First practice with youself.

Your task is to calculate the class with the best average student performance. Try for n101p self. Then import into your blog database as follows:.

Some students have three homework assignments, etc. In this assignment you will use the aggregation framework to find the most frequent author of comments on your blog Check all that apply. Please choose your answer below for the most prolific comment author:.

Please round the answer to a whole number. The answer for CT and NJ using this data set is Now use the aggregation framework to calculate the author with the greatest number of comments. You need to group twice to solve this problem.

For this problem, assume that a city name that appears in more than one state represents two separate cities. Using the aggregation framework, calculate the sum total of people who are living in a zip code where answefs city starts with one of those possible first characters.

## Mongodb M101J Homework 1 1 Answers

Also, you will need a filtering step to get rid of all documents where the city does not start with the select set of initial characters. Please use the Aggregation pipeline to solve this problem. In this assignment you will use the aggregation framework to find the most frequent author of comments on your blog. Choose the answer below. Import it into your mongod using the following command from the command line:.

# Mongodb MJ Homework 1 1 Answers

Download the handout and mongoimport. After that, you just need to sort. Prefered Cities to Live! Crunching the Zipcode dataset Please calculate the average population of cities in California abbreviation CA and New York NY taken together with populations over 25, Different states might have the same city name.

To help you verify your work before submitting, the author with the fewest comments is Mariela Sherer and she commented times. For this set, there are only documents and zip codesand m10p1 of them are in Monggodb York, Connecticut, New Jersey, and California.

Once you’ve generated your aggregation query and found your answer, select it from the choices answera. You must figure out the GPA that each student has achieved in a class and then average those numbers to get a class average. We will be using a data set similar to ones we’ve used before. Friday, 8 September Week 5: