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  2. Pearson correlation coefficient - Wikipedia

    en.wikipedia.org/wiki/Pearson_correlation...

    The correlation reflects the strength and direction of a linear relationship (top row), but not the slope of that relationship (middle), nor many aspects of nonlinear relationships (bottom). N.B.: the figure in the center has a slope of 0 but in that case the correlation coefficient is undefined because the variance of Y is zero.

  3. Simple linear regression - Wikipedia

    en.wikipedia.org/wiki/Simple_linear_regression

    In statistics, simple linear regression (SLR) is a linear regression model with a single explanatory variable. That is, it concerns two-dimensional sample points with one independent variable and one dependent variable (conventionally, the x and y coordinates in a Cartesian coordinate system) and finds a linear function (a non-vertical straight line) that, as accurately as possible, predicts ...

  4. List of S&P 500 companies - Wikipedia

    en.wikipedia.org/wiki/List_of_S&P_500_companies

    The S&P 500 is a stock market index maintained by S&P Dow Jones Indices.It comprises 503 common stocks which are issued by 500 large-cap companies traded on American stock exchanges (including the 30 companies that compose the Dow Jones Industrial Average).

  5. Yahoo Finance Chartbook: 7 charts show why the S&P 500 ... - AOL

    www.aol.com/finance/yahoo-finance-chartbook-7...

    The S&P 500 has gained an average of 23% in the 18 months following the 20% threshold, which in the current context would roughly represent 2024 year-end. For reference, the S&P 500 closed at ...

  6. Protein in Urine: A Chart on What Your Levels Should Be

    www.healthline.com/health/protein-levels-in...

    Protein amount. What it means. 30 mg/g or less. Normal. 30–300 mg/g. Moderately increased levels and potential chronic kidney disease. 300 mg/g or more. Severely increased levels. A reading of ...

  7. Oscillopsia: Causes, Symptoms, and Treatment - Healthline

    www.healthline.com/health/oscillopsia

    People with oscillopsia describe symptoms like these: jumping, jittery, wobbly, or shimmering vision. blurred or fuzzy vision. trouble focusing. double vision. nausea. dizziness. vertigo, a ...

  8. Bendopnea: Shortness of Breath When Bending Over - Healthline

    www.healthline.com/health/heart-failure/...

    Summary. Shortness of breath when bending over can occur due to worsening heart failure, but it can also happen with other conditions or be a side effect of excess weight. Shortness of breath when ...

  9. File:S&P 500 Index Logarithmic Chart through Jan 2021.svg

    en.wikipedia.org/wiki/File:S&P_500_Index...

    S&P 500 Index Logarithmic Chart through Jan 2021.svg. English: S&P 500 Index Logarithmic Chart's Interesting Features. While S&P 500 data to linear plot scale is good for analysis of a span of 2 or 3 years, beyond that a logarithmic S&P 500 chart is best. This is because it gives the same Y or vertical displacement for a certain percentage move ...