As a domain expert in the field of food economics and consumer behavior, I have conducted extensive research on the pricing of various food items, including the ubiquitous pizza. The price of a pizza can vary greatly depending on a multitude of factors such as the location, the type of crust, the toppings, the size, and the brand or restaurant where it is purchased. To provide a comprehensive answer to your question regarding the average price of a pizza, let's delve into these factors and the data available.
首先，作为食品经济学和消费者行为领域的专家，我对各种食品项目的价格进行了广泛的研究，包括无处不在的披萨。披萨的价格可以根据多种因素而大不相同，例如地点、饼皮类型、配料、尺寸以及购买的牌子或餐厅。为了全面回答您关于披萨平均价格的问题，让我们深入探讨这些因素和现有数据。
Location (地点): The cost of living in a particular area can significantly influence the price of a pizza. For instance, a pizza in a city with a higher cost of living, like New York, is likely to be more expensive than one in a smaller town or a rural area. According to the data you provided, Kentucky claims the lowest cost for a pizza at $8.90, which suggests a lower cost of living or competitive market in that region. Meanwhile, New York, Connecticut, Pennsylvania, and the California Bay Area are all tied at the top with $16 pizzas, indicating potentially higher living costs or a premium placed on certain brands or quality in these areas.
地点：特定地区的生活水平可以显著影响披萨的价格。例如，像纽约这样生活成本较高的城市的披萨可能会比小镇或农村地区的披萨更贵。根据您提供的数据，肯塔基州声称披萨的最低成本为8.90美元，这表明该地区的生活水平较低或市场竞争较为激烈。与此同时，纽约、康涅狄格州、宾夕法尼亚州和加利福尼亚州湾区的披萨价格都以16美元的价格并列首位，这表明这些地区的生活成本可能更高，或者某些品牌或质量上有一定的溢价。
Type of Crust (饼皮类型): The type of crust can also affect the price. A simple hand-tossed crust will generally be less expensive than a gourmet crust like thin and crispy or deep dish. Additionally, the choice of wheat or gluten-free crust can also add to the cost due to the specialty nature of these crusts.
饼皮类型：饼皮的类型也会影响价格。简单的手抛饼皮通常比薄脆或深盘等美食饼皮便宜。此外，选择全麦或无麸质饼皮也可能会增加成本，因为这些饼皮具有特殊性。
Toppings (配料): The choice of toppings can significantly increase the price of a pizza. More exotic or premium toppings like seafood, prosciutto, or gourmet cheeses will cost more than standard options like pepperoni, mushrooms, and onions. Additionally, the quantity of toppings can also affect the price.
配料：配料的选择可以显著提高披萨的价格。像海鲜、意大利熏火腿或美食奶酪等更奇特或高级的配料比标准选择如意大利辣香肠、蘑菇和洋葱要贵。此外，配料的数量也会影响价格。
Size (尺寸): Pizzas come in various sizes, and larger sizes will naturally cost more. The price increase is not always linear, as larger pizzas may offer a better value per slice.
尺寸：披萨有各种尺寸，尺寸越大，成本自然越高。价格增长并不总是线性的，因为较大的披萨可能每片提供更好的价值。
Brand or Restaurant (品牌或餐厅): The reputation and brand value of a restaurant or pizza chain can also affect the price. Well-known brands or those with a reputation for high quality or exceptional service may charge more for their pizzas.
品牌或餐厅：餐厅或披萨连锁店的声誉和品牌价值也会影响价格。知名品牌或那些以高品质或卓越服务著称的品牌可能会为他们的披萨收取更高的价格。
Taking all these factors into account, the national average price for a pizza in the U.S., as per the data you mentioned, is $13.21 as of March 27, 2014. It's important to note that this is a national average and individual prices will vary. Additionally, prices may have changed since 2014 due to inflation or other economic factors.
考虑到所有这些因素，根据您提到的数据，截至2014年3月27日，美国披萨的全国平均价格为13.21美元。需要注意的是，这是一个全国平均值，个别价格会有所不同。此外，由于通货膨胀或其他经济因素，自2014年以来价格可能已经发生了变化。
Now, let's move on to the translation of the response into Chinese.

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Kentucky claims the lowest cost pie at $8.90, while New York, Connecticut, Pennsylvania, and the California Bay Area are all tied at the top with $16 pizzas. The average price for a VPN pie in the U.S. clocks in at $13.21.Mar 27, 2014read more >>