standard normal is for a lot of data, a t distribution is more appropriate for smaller samples, extrapolating to a larger set.
Yes, if you mean normal with a mean other than 0 and/or standard error other than 1. If m is the mean and s the standard error, then transform the original data, y, using: z = (y - m)/s z will have the N(0,1) distribution!!!!!!!
The frequency distribution table lists all the possible events and how many times (frequency) they occurred.
The cumulative probability up to the mean plus 1 standard deviation for a Normal distribution - not any distribution - is 84%. The reference is any table (or on-line version) of z-scores for the standard normal distribution.
true
Table algebra is the branch of mathematics like geometry and others.
standard normal is for a lot of data, a t distribution is more appropriate for smaller samples, extrapolating to a larger set.
A normal distribution simply enables you to convert your values, which are in some measurement unit, to normal deviates. Normal deviates (i.e. z-scores) allow you to use the table of normal values to compute probabilities under the normal curve.
The z-score table is the cumulative distribution for the Standard Normal Distribution. In real life very many random variables can be modelled, at least approximately, by the Normal (or Gaussian) distribution. It will have its own mean and variance but the Z transform converts it into a standard Normal distribution (mean = 0, variance = 1). The Z-distribution is then used to make statistical inferences about the data. However, there is no simple analytical method to calculate the values of the distribution function. So, it has been done and tabulated for easy reference.
-1.43 (approx)
[object Object]
For statistical tests based on (Student's) t-distribution you use the t-table. This is appropriate for small sample sizes - up to around 30. For larger samples (or degrees of freedom), the t-distribution becomes very close to the Standard Normal distribution so you use the z-tables.
Yes, they provide the normal distribution z table on the P1 exam, at least on the computer exam. I'm not sure about the paper and pencil exam.
Mathematics frequency table is a graph that is used for data value. This makes it easier for things to be graded.
Yes, if you mean normal with a mean other than 0 and/or standard error other than 1. If m is the mean and s the standard error, then transform the original data, y, using: z = (y - m)/s z will have the N(0,1) distribution!!!!!!!
The frequency distribution table lists all the possible events and how many times (frequency) they occurred.
Frequency Distribution Table