Question
The company TRAMAD is conducting a study on the variation of the prices of its shares, listed on the Santiago Stock Exchange. For this purpose,
The company "TRAMAD" is conducting a study on the variation of the prices of its shares, listed on the Santiago Stock Exchange. For this purpose, it takes a sample of prices corresponding to the last 30 working days. The value indicated is the one that has been registered at the closing time of the operations:
450540280440350720400190410700
600500250780290580320220320660
300360320605180300210520290420
a) Make a frequency table.
b) TRAMAD estimates that your situation is not alarming if the percentage of days in which prices were less than or equal to $400 is less than 30%. What do you say Is this company's situation alarming or not? Explain.
c) Calculate the mean and standard deviation.
d) Calculate and interpret the quartile 1.
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