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: 450 540 280 440 350 720 400 190 410 700 600 500 250 780 290 580 320 220 320 660 300 360 320 605 180 300 210 520 290 420 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.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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:
450 540 280 440 350 720 400 190 410 700
600 500 250 780 290 580 320 220 320 660
300 360 320 605 180 300 210 520 290 420
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
d) Calculate and interpret the
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Given Data :
450 540 280 440 350 720 400 190 410 700
600 500 250 780 290 580 320 220 320 660
300 360 320 605 180 300 210 520 290 420
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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