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Articles related to "range"


Assumptions of Linear Regression

  • The second assumption that one makes while fitting OLSR models is that the residual errors left over from fitting the model to the data are independent, identically distributed random variables.
  • For all i in the data set of length n rows, the ith residual error of regression is a random variable that is normally distributed (that’s why the N() notation).
  • It is a common misconception that linear regression models require the explanatory variables and the response variable to be normally distributed.
  • Let’s run the Jarque-Bera normality test on the linear regression model that we have trained on the Power Plant data set.
  • The Jarque-Bera test has judged them to not be different than 0.0 and 3.0 in a statistically significant manner, thereby implying that the residuals of the linear regression model are, for all practical purposes normally distributed.

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10 Python Built-in Functions Every Data Scientist Should Know

  • For instance, numpy and pandas are great data analysis libraries.
  • There are many more useful libraries for data science in python ecosystem.
  • Set function returns a set object from an iterable (e.g. a list).
  • One use case of sets is to remove duplicate values from a list or tuple.
  • We may need to sort a list or pandas series when doing data cleaning and processing.
  • Zip function takes iterables as argument and returns an iterator consists of tuples.
  • For instance, range(0,10,2) returns a sequence that starts at 0 and stops at 10 (10 is exclusive) with increments of 2.
  • We used map function to square each element of list a.
  • List comprehension is preferable over map function in most cases due to its speed and simpler syntax.
  • We can create a list from a range, set, pandas series, numpy array, or any other iterable.

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Assumptions of Linear Regression

  • The second assumption that one makes while fitting OLSR models is that the residual errors left over from fitting the model to the data are independent, identically distributed random variables.
  • For all i in the data set of length n rows, the ith residual error of regression is a random variable that is normally distributed (that’s why the N() notation).
  • It is a common misconception that linear regression models require the explanatory variables and the response variable to be normally distributed.
  • Let’s run the Jarque-Bera normality test on the linear regression model that we have trained on the Power Plant data set.
  • The Jarque-Bera test has judged them to not be different than 0.0 and 3.0 in a statistically significant manner, thereby implying that the residuals of the linear regression model are, for all practical purposes normally distributed.

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A closer look at the insane 1400hp, 7-motor Ford Mustang Mach-E

  • Ford is clearly focused on not just producing an electric car that is designed for calm commutes and hands-free driving, but delivering some excitement along with the electricity.
  • The additional motors are split between the front and rear drive axles, with the added benefit of being adjustable to different types of performance from drifting to high-speed track racing.
  • Mustang Mach-E 1400 features Brembo brakes, like the Mustang GT4 race car, and a hydraulic handbrake system designed for drifting that integrates with the powertrain controls to enable the ability to shut off power to the rear motors.
  • The extended range all-wheel-drive Mach-E will deliver 346 horsepower (hp) and 428 pound-feet (lb.-ft.) of torque, which tops previous estimates by more than 10 hp.
  • The extended range rear-wheel drive model will produce 290 hp and 317 lb.-ft.
  • The standard range rear-wheel drive model will also deliver 266 hp, but 317 lb.-ft.

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Audi lowers the E-Tron SUV's starting price by $9,000 for 2021

  • Audi’s E-Tron SUV went all-electric for the first time in its 2019 model year, and with the lineup expanding in 2021 to add a new Sportback model, the base electric SUV is getting cheaper.
  • Starting price for a base model E-Tron SUV was $74,800, but now it will drop by nearly $9,000 to $65,900.
  • Other changes include additional usable battery capacity — Audi limits it to make the batteries last longer — and tweaks that make the SUV more efficient.
  • They’re built into the Sportback version at launch, which has 218 miles of listed range, and the 2021 SUV will extend its EPA-rated range by 18 miles, to 222 mile.
  • If these don’t cut it for you, Audi has more E-Trons on the way including its GT sedan and Q4 compact SUV.

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After Shopify's huge quarter, BigCommerce raises its IPO price range

  • When BigCommerce, the Texas-based Shopify competitor, first announced an IPO price range, the numbers looked a little light.
  • With a range of just $18 to $20 per share, it appeared that the firm was targeting a valuation of around $1.18 billion to $1.31 billion.
  • Given that BigCommerce had revenue of “between $35.5 million and $35.8 million” in Q2 2020, up a little over 30% from the year-ago period (and better margins than Shopify) its implied revenue multiple that its IPO price range indicated felt low.
  • Today, BigCommerce announced a new, higher IPO price range.
  • The firm now intends to price its IPO between $21 and $23 per share.
  • By moving its pricing up from $18 to $20 to $21 to $23, BigCommerce boosted its IPO range by 16.7% at its lower end and 15% at the upper end.

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