1) At home, you have a salt water fish tank. You need to measure the salt content. To proceed, you use a cup and scoop out some water. Using traditional statistical language, this cup of water is: a. a parameter b. a sample c. the population d. simulated data e. a statistic f. normally distributed g. a sampling error h. a constant i. uniformly distributed
1) At home, you have a salt water fish tank. You need to measure the salt content. To proceed, you use a cup and scoop out some water.
Using traditional statistical language, this cup of water is:
a. a parameter b. a sample
c. the population d. simulated data
e. a statistic f.
g. a sampling error h. a constant
i. uniformly distributed
2) The normal, theoretical probability distribution is defined by
a. total sum of squares b. skewness and kurtosis
c. sample size d. mean and standard deviation
e. mean and variance f. standard error of the mean
g. median and IQR h. degrees of freedom
i. none of the above
3) . A small sample that comes from a normally distributed population,
NOTE: This is an "empirical question" that can be probed at the R Console by submitting this line of code, say 20 times --
y <- rnorm(15); mean(y); sd(y); shapiro.test(y)$p.value
a. is distributed as the Weibull distribution b. has
c. is never normally distributed d. always provides unreliable statistics
e. is always normally distributed f. is often normally distributed
g. is distributed as the t-distribution
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