PCED-30-02

Question 1

You are writing a function to validate battery voltage readings. The rules are: If the reading is "MISSING" or None, return "Missing". If the value is below 2.5 or above 4.2, return "Outlier". Otherwise, return "Normal". Which version correctly implements this logic using the most robust conditional and nested structures? Select the best answer.

Question 2

An online retailer collects customer reviews, order transaction logs, and product ratings. Which of the following correctly classifies these types of data? Select the best answer.

1. Product ratings are qualitative and structured; customer reviews are qualitative and unstructured; transaction logs are quantitative and semi-structured.
2. Product ratings are qualitative and unstructured; customer reviews are quantitative and structured; transaction logs are semi-structured and qualitative.
3. Product ratings are quantitative and structured; customer reviews are qualitative and unstructured; transaction logs are structured and quantitative
4. Product ratings are quantitative and unstructured; customer reviews are structured and qualitative; transaction logs are quantitative and unstructured.

Question 3

Which of the following code snippets will output True for both print functions by correctly identifying the type of each variable and performing valid operations?

Question 4

Which task is traditionally or typically performed by a data analyst, and not by a data scientist or analytics specialist? Select the best answer.

1. Designing a data pipeline to ingest and process real-time sensor data.
2. Recommending pricing strategies using predictive modeling and A/B testing.
3. Developing machine learning algorithms to predict user behavior.
4. Creating summary tables and charts to describe patterns in historical data.

Question 5

You are given two lists representing daily page views and sign-ups on a website: views = [120, 130, 128, 700, 115, 123, 119, 680, 122] signups = [12, 15, 13, 50, 11, 14, 10, 55, 13] You want to: remove outliers (views > 600), and calculate correlation between the cleaned lists. Which code accomplishes this correctly? Select the best answer.