The mean and the variance are equal in? 

Qnt 561 final exam new

1) The mean and the variance are equal in – a normal distribution.
2) The difference between the sample mean and the population mean is called the – bias.
3) A dummy variable or indicator variable – takes on values of one or zero to denote an “absence” or “presence” for various categories.
4) A Type I error is – falsely rejecting a null hypothesis that is actually true.
5) Which of the following measures of central location is affected most by extreme values? – Mean.
6) A correlation matrix – shows relationships between variables, typically presented as a table with each row representing one variable, and each column representing another.
7) In a set of observations, which measure of central tendency reports the value that occurs most often? -Mode.
8) Which level of measurement is required for the median? – Interval/Ratio Level.
9) Which level of measurement is required for the mode? – Nominal Level.