ddof=1)) # because we estimate mean from data fdistribution = stats.f(len(a)-1,len(b)-1) # build an F-distribution object p_value = fdistribution.cdf(fstatistics) f_critical = fd.ppf(0.05) print(fstatistics
CREATE TYPE table_count AS (table_schema TEXT,table_name TEXT, num_rows INTEGER); CREATE OR REPLACE FUNCTION count_em_all () RETURNS SETOF table_count AS ' DECLARE the_count RECORD; t_name RECORD; r table_count%ROWTYPE; BEGIN FOR t_name IN SELECT table_schema,table_name FROM informati...
There are many methods to do this. You'll find two classifications to descriptive statistics in some pieces, and in some, you'll read about three. People have different ways in which they can describe data. Below we've classified descriptive statistics into four major types. Measures of ...
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Example question #1: Find the subsequential limits of the sequence an = 1 – (-1)n. The key here is to look for a pattern by generating some terms. Step 1: Generate some terms of the sequence. One of the easiest ways to do this is in Excel. Here’s the steps: Type the numbers...
I remember when I was just starting to use R, errors in my code were so frequent that I almost gave up learning this programming language. I even recall that I went back to Excel a few times to finish my analyses because I could not find what was causing the issue. Fortunately, I ...
5. Do an AMA if you have a compelling story You can raise your company's profile and build your personal brand by doing an AMA on Reddit. Post in r/AMA, or find a relevant post and comment on it with “I am the CEO of ___. Ask me anything.” AMAs are conducted by regular...
The coefficient of determination is the square of the correlation coefficient also known as "r" in statistics. The value "r" can result in anegative numberbut r2 can't result in a negative number because r-squared is the result of "r" multiplied by itself or squared. The square of a ...
Demographics are statistics that describe populations and their characteristics. Demographic analysis is the study of a population-based on factors such as age, race, and sex. Demographic data refers to socioeconomic information expressed statistically, including employment, education, income, marriage rate...