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  2. Spike-and-slab regression - Wikipedia

    en.wikipedia.org/wiki/Spike-and-slab_regression

    The "spike" is the probability of a particular coefficient in the model to be zero. The "slab" is the prior distribution for the regression coefficient values. An advantage of Bayesian variable selection techniques is that they are able to make use of prior knowledge about the model.

  3. Radar chart - Wikipedia

    en.wikipedia.org/wiki/Radar_chart

    The radar chart is a chart and/or plot that consists of a sequence of equi-angular spokes, called radii, with each spoke representing one of the variables. The data length of a spoke is proportional to the magnitude of the variable for the data point relative to the maximum magnitude of the variable across all data points.

  4. Standard addition - Wikipedia

    en.wikipedia.org/wiki/Standard_addition

    The silver concentration in the test sample is the x-intercept of the plot. The dilution factor is multiplied by this initial concentration to determine the original concentration. Matrix effects occur even with methods such as plasma spectrometry , which have a reputation for being relatively free from interferences.

  5. Easy Gardener Products, Inc. - Wikipedia

    en.wikipedia.org/wiki/Easy_Gardener_Products,_Inc.

    Easy Gardener manufactures and distributes over 200 products through lawn and garden retailers in the United States, Canada, and the UK. Easy Gardener's brands include WeedBlock and Landmaster weed control fabrics, Jobe's fertilizer spikes and tree care products, and ROSS root feeder and fertilizers. The company also produces shade fabrics ...

  6. Direct linear plot - Wikipedia

    en.wikipedia.org/wiki/Direct_linear_plot

    The best known plots of the Michaelis–Menten equation, including the double-reciprocal plot of / against /, [2] the Hanes plot of / against , [3] and the Eadie–Hofstee plot [4] [5] of against / are all plots in observation space, with each observation represented by a point, and the parameters determined from the slope and intercepts of the lines that result.

  7. Curta - Wikipedia

    en.wikipedia.org/wiki/Curta

    A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.

  8. Arrhenius plot - Wikipedia

    en.wikipedia.org/wiki/Arrhenius_plot

    Arrhenius plots are often used to analyze the effect of temperature on the rates of chemical reactions. For a single rate-limited thermally activated process, an Arrhenius plot gives a straight line, from which the activation energy and the pre-exponential factor can both be determined.

  9. Plot sampling - Wikipedia

    en.wikipedia.org/wiki/Plot_sampling

    In ecology, plot sampling is a widely used method of abundance estimation in which specific areas, or plots, are selected from within a survey region and sampled. This approach allows scientists to make population estimates using statistical techniques such as the Horvitz–Thompson estimator .