# Time use patterns in the last decade

Alexander Fishkov, Ph.D. student Computer Science

In this post, we will explore the data from the American Time Use Survey and attempt to put the numbers in perspective — using data for the years of 2003-2014 will show us changes in daily activities in the last decade.

# Measuring health levels in the US

Andrey Kamenov, Ph.D. Probability and Statistics

A question in a survey conducted by the Centers for Disease Control and Prevention asked a respondent to assess his or her own health. Just one in every six people considered their own health “excellent”; most stuck to “very good” or even just “good.” But how do we use this data to visualize the relationship between health levels and other factors?

The problem is, the scale itself is not quantitative. It doesn’t explicitly state how much better “good” is than “fair”.

In order to measure the health levels of specific groups in the general population, we’ll use a quite common procedure. It provides values between 0 percent (meaning all respondents have poor health) and 100 percent (where everyone has excellent health). The exact values of everything in between are based on the (empirical) nationwide percentages.

Let’s see how our health index fares against two of the most obvious factors. The first chart shows the speed of peoples’ self-perceived decline in health with age:

# Are smaller Research and Development businesses more effective?

Andrey Kamenov, Ph.D. Probability and Statistics

As we saw in an earlier post, one of the industries instrumental to the growth in the professional services sector is research and development. The number of people employed in this sector has grown from 330,000 to almost 480,000. Even more impressive is the fact that it peaked at almost 600,000 in 2006:

# California gun crime: 2017 report

Andrey Kamenov, Ph.D. Probability and Statistics

The growth in gun-related crime is becoming an issue in California. The state’s firearm homicide rate had already been rising for two years in 2016, and the data for 2017 doesn’t look very bright either.

Last year, 2,100 gun-related incidents with victims occurred in California, excluding accidental shootings. This number is the second highest of all states, second only to Illinois.

1,701 people were injured and another 1,113 were killed.

# What are America’s favorite movie genres?

Pavel Prikhodko, Ph.D. Machine Learning

There are many movie genres in the American film industry, but which are the most popular in the United States? According to the statistics from 1995 to 2017, the leader amongst the movie genres was adventure movies, which generated a total box office revenue of more than \$45 billion. Comedy films ranked second with \$42.66 billion in the box office revenue. The cinema-friendly action genre ranked third, pulling in a total box office revenue of \$37.08 billion. After action came the drama genre, generating \$33.56 billion in box office revenue from 1995 to 2017. Lastly, the fifth most popular genre was thriller/suspense — the box office revenue of this genre amounted to \$17.06 billion.

# American hunting and wildlife

Pavel Prikhodko, Ph.D. Machine Learning

Many years ago, hunting was a necessity for survival. In current times, hunting has developed into a form of sport and recreation in Western countries. In the U.S., hunting is generally regulated on a state-by-state basis, but hunters nationwide are required to hold a hunting license regardless of state. In 2013, about 14 million people participated in hunting in the U.S.

In 2011, American hunters spent an average of \$2,484 on hunting, a significant increase from 2006, when the average hunter spent approximately \$2,050. In 2001, the average hunter’s expenditures in the U.S. amounted to \$2,001.

# Baltimore crime in 2017

Andrey Kamenov, Ph.D. Probability and Statistics

Baltimore is a city that is particularly known for its high crime rate ­— so much so, in fact, that there is an entire Wikipedia article about crime in the city.

Now that 2017 is over, it’s time to look back and see if the situation has improved. At first glance, it appears to not have improved. Here’s a map showing every intentional shooting with at least one victim in Baltimore. You can click on any marker to see details of the incident.

# The production of frozen yogurt and ice cream

Pavel Prikhodko, Ph.D. Machine Learning

The sweetest part of the frozen foods industry is the frozen desserts category. The frozen desserts sector combines categories such as regular and low-fat ice cream, frozen yogurt, sherbet and other frozen treats.

A popular favorite, frozen yogurt is a frozen, low-calorie dessert which is often served in a wide range of flavors. The production of this type of dessert is nothing but impressive in the United States. In 2010, more than 50 million gallons of frozen yogurt were produced; by 2011, this number increased to 62.7 million gallons. While this increase is impressive, the following two years were the real celebration for frozen yogurt lovers.

# Who is happy or unhappy with their relationship in America?

Pavel Prikhodko, Ph.D. Machine Learning

During a fresh survey conducted by Statista on the current relationship status of Americans, about 55 percent of male respondents stated that they are married. In 2017, the number of female respondents who were married was 48 percent. Some 11 percent of male respondents stated they are married (compared to 13 percent of female respondents). The percentage of single individuals was the same among men and women (29 percent).

About 6 percent of female respondents said that they have a different status, while the number of male respondents who stated the same amounted to 3 percent. Around 3 percent of female respondents and 2 percent of male respondents preferred not to answer about their current relationship status.

# Mapping America’s most innovative companies

Andrey Kamenov, Ph.D. Probability and Statistics

Where are the most innovative companies in the U.S. located? For most, the answer seems quite obvious: Silicon Valley.

The San Jose-Sunnyvale-Santa Clara Metropolitan Statistical Area (MSA) has held the top spot since at least 2000. Several companies made their contributions — AMD, HP, Cisco and Apple, to name a few. In 2015, Google was issued the largest number of patents in Silicon Valley. We took a deeper look at the innovation here in our earlier post.