Question 3 What kind of bias is present in the following dataset of online sales of a clothing store; explain with your reasoning: Online sales data 2250 2000 1750 1500 - Sales 1250 1000 750 500 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 yearQuestion 1 Which one (if any) of the following is an example of task for Data Mining system and which one (if any) is not a) Search for the most frequent last names in a customer database, and b) Identifying which hashtags usually co-occur in the posts in a database of Twitter posts. Explain your reasoning and identify which type of data mining task you can apply here.Question 2 Which of the following is (are) the example(s) of data bias: Higher proportions of the males in a performance analytics dataset of a technology company's workforce 7 Differences in the characteristics of users represented in a website browsing dataset None of these options Duplication in the dataset