Formulação da Hipótese: Velocidade em Foco
Para determinar qual plataforma, Lazada ou Shopee, oferece entregas mais rápidas, formulamos uma hipótese central: a Lazada apresenta um tempo de entrega médio inferior ao da Shopee. Para testar essa premissa, planejamos um experimento AB detalhado, focando exclusivamente na variável tempo de entrega. É fundamental compreender que outros fatores, como custo do frete e variedade de produtos, serão mantidos constantes para isolar o efeito da velocidade. O propósito é obter uma visão clara e objetiva do desempenho de cada plataforma nesse quesito.
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Definimos como métrica de sucesso principal o tempo médio de entrega, medido em dias, desde o momento da compra até o recebimento do produto pelo cliente. Adicionalmente, monitoraremos a taxa de entrega dentro do prazo estipulado pelas plataformas. Um exemplo prático: se a Lazada apresentar um tempo médio de entrega 20% menor que a Shopee e uma taxa de entrega no prazo 15% superior, consideraremos a hipótese confirmada. Para garantir a validade estatística, utilizaremos amostras de tamanho adequado e métodos de análise comparativos.
Metodologia Experimental: Grupo de Controle e Tratamento
A espinha dorsal do nosso experimento reside na criação de dois grupos distintos: um grupo de controle, representando a Shopee, e um grupo experimental, representando a Lazada. Em ambos os grupos, realizaremos compras de produtos idênticos ou similares, com preços e localidades de entrega equivalentes. Vale destacar que o grupo de controle servirá como a linha de base, permitindo-nos quantificar o impacto da plataforma experimental (Lazada) no tempo de entrega. O propósito é garantir que a única diferença significativa entre os grupos seja a plataforma utilizada para a compra.
O experimento terá duração de duas semanas. Justificamos este prazo pela necessidade de coletar uma amostra robusta de informações, minimizando o impacto de flutuações aleatórias no tempo de entrega. Durante este período, monitoraremos continuamente o tempo de entrega de cada pedido em ambos os grupos. A coleta de informações será automatizada, utilizando ferramentas de rastreamento de encomendas e planilhas eletrônicas, a fim de evitar erros manuais e garantir a precisão dos resultados. Recursos necessários incluem contas de usuário em ambas as plataformas, um orçamento para a compra dos produtos e ferramentas de rastreamento de encomendas.
A Jornada da Entrega: Um experimento Prático
Imagine a seguinte cena: dois amigos, Ana e Bruno, decidem comprar o mesmo livro, um em cada plataforma. Ana escolhe a Lazada, enquanto Bruno opta pela Shopee. Ambos realizam a compra no mesmo dia, no mesmo horário, e selecionam o mesmo abordagem de entrega padrão. O experimento demonstra que, após cinco dias, Ana recebe o livro, enquanto Bruno precisa aguardar mais dois dias. Este é apenas um exemplo de como o tempo de entrega pode variar entre as plataformas, mesmo em condições semelhantes.
Outro exemplo: Maria compra um fone de ouvido na Lazada e recebe em três dias. João compra um fone de ouvido similar na Shopee, do mesmo vendedor, mas recebe em seis dias. A jornada revela que a logística da Lazada parece ser mais eficiente nesse caso. Contudo, para validar essa impressão, é crucial interpretar um grande número de pedidos e calcular o tempo médio de entrega em ambas as plataformas. Esses exemplos ilustram a importância de um experimento controlado para determinar se a Lazada realmente oferece entregas mais rápidas que a Shopee.
