Probability
Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Constructed from an ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation surface, and a color silk-screened flip-over instruction board, a flip-over pin board, and several metal balls. Flip the pin board, and the balls fall one by one, colliding with the pins along the way, and land at the bottom, forming a curve that is high in the middle and low at both ends; this is the normal distribution curve. Scientific Principle: The normal distribution, also known as the Gaussian distribution, is a probability distribution of great importance in mathematics, physics, engineering, and many other fields, and has significant influence in many aspects of statistics. If a random variable follows a probability distribution with a location parameter and a scale parameter, denoted as: then its probability density function is: The mathematical expectation or expected value of the normal distribution equals the location parameter, which determines the position of the distribution; the square root of its variance or standard deviation equals the scale parameter, which determines the spread of the distribution. The probability density function curve of the normal distribution is bell-shaped, so it is often called the bell curve. The standard normal distribution we usually refer to is a normal distribution with a location parameter of 0 and a scale parameter of 1.
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- China Science and Technology Museum Standard Edition CSTM Standard EditionDimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Constructed from an ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation surface, and a color silk-screened flip-over instruction board, a flip-over pin board, and several metal balls. Flip the pin board, and the balls fall one by one, colliding with the pins along the way, and land at the bottom, forming a curve that is high in the middle and low at both ends; this is the normal distribution curve. Scientific Principle: The normal distribution, also known as the Gaussian distribution, is a probability distribution of great importance in mathematics, physics, engineering, and many other fields, and has significant influence in many aspects of statistics. If a random variable follows a probability distribution with a location parameter and a scale parameter, denoted as: then its probability density function is: The mathematical expectation or expected value of the normal distribution equals the location parameter, which determines the position of the distribution; the square root of its variance or standard deviation equals the scale parameter, which determines the spread of the distribution. The probability density function curve of the normal distribution is bell-shaped, so it is often called the bell curve. The standard normal distribution we usually refer to is a normal distribution with a location parameter of 0 and a scale parameter of 1.
Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Constructed from an ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation surface, and a color silk-screened flip-over instruction board, a flip-over pin board, and several metal balls. Flip the pin board, and the balls fall one by one, colliding with the pins along the way, and land at the bottom, forming a curve that is high in the middle and low at both ends; this is the normal distribution curve. Scientific Principle: The normal distribution, also known as the Gaussian distribution, is a probability distribution of great importance in mathematics, physics, engineering, and many other fields, and has significant influence in many aspects of statistics. If a random variable follows a probability distribution with a location parameter and a scale parameter, denoted as: then its probability density function is: The mathematical expectation or expected value of the normal distribution equals the location parameter, which determines the position of the distribution; the square root of its variance or standard deviation equals the scale parameter, which determines the spread of the distribution. The probability density function curve of the normal distribution is bell-shaped, so it is often called the bell curve. The standard normal distribution we usually refer to is a normal distribution with a location parameter of 0 and a scale parameter of 1.
- Optimized Popular Edition Optimized EditionDimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Constructed from an ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation surface, and a color silk-screened flip-over instruction board, a flip-over pin board, and several metal balls. Flip the pin board, and the balls fall one by one, colliding with the pins along the way, and land at the bottom, forming a curve that is high in the middle and low at both ends; this is the normal distribution curve. Scientific Principle: The normal distribution, also known as the Gaussian distribution, is a probability distribution of great importance in mathematics, physics, engineering, and many other fields, and has significant influence in many aspects of statistics. If a random variable follows a probability distribution with a location parameter and a scale parameter, denoted as: then its probability density function is: The mathematical expectation or expected value of the normal distribution equals the location parameter, which determines the position of the distribution; the square root of its variance or standard deviation equals the scale parameter, which determines the spread of the distribution. The probability density function curve of the normal distribution is bell-shaped, so it is often called the bell curve. The standard normal distribution we usually refer to is a normal distribution with a location parameter of 0 and a scale parameter of 1.
Dimensions: Transport dimensions: 540×440×640mm, Display dimensions: 540×440×1450mm. Composition: Constructed from an ABS plastic molded cabinet, ABS plastic molded base, ABS milky white plastic molded operation surface, and a color silk-screened flip-over instruction board, a flip-over pin board, and several metal balls. Flip the pin board, and the balls fall one by one, colliding with the pins along the way, and land at the bottom, forming a curve that is high in the middle and low at both ends; this is the normal distribution curve. Scientific Principle: The normal distribution, also known as the Gaussian distribution, is a probability distribution of great importance in mathematics, physics, engineering, and many other fields, and has significant influence in many aspects of statistics. If a random variable follows a probability distribution with a location parameter and a scale parameter, denoted as: then its probability density function is: The mathematical expectation or expected value of the normal distribution equals the location parameter, which determines the position of the distribution; the square root of its variance or standard deviation equals the scale parameter, which determines the spread of the distribution. The probability density function curve of the normal distribution is bell-shaped, so it is often called the bell curve. The standard normal distribution we usually refer to is a normal distribution with a location parameter of 0 and a scale parameter of 1.