A(n) ___ is a graphic that transforms numerical data into a more visual representation.
举一反三
- The line chart is a simple form of graphic representation, in which data are arranged in rows and columns. ( )
- 中国大学MOOC: Which of the following visual aids is the best to present numerical data and standardized values for reference?
- If the mean of a numerical data set exceeds the median, the data are considered to be left-skewed.
- Which one is right about wavelet transforms? A: Wavelet transforms store large fractions of the strongest of the wavelet coefficients. B: The DWT decomposes each segment of time series via the successive use of low-pass and high-pass filtering at appropriate levels. C: Wavelet transforms can be used for reducing data and smoothing data. D: Wavelet transforms means applying to pairs of data, resulting in two set of data of the same length.
- Which one is right about wavelet transforms? A: Wavelet transforms store large fractions of the strongest of the wavelet coefficients. B: Wavelet transforms are completely different from discrete Fourier transform (DFT). C: Each transform has 2 functions: smoothing, difference. D: Wavelet transforms means applying to pairs of data, resulting in two set of data of length L.