STATISTICS QUIZ_NS2023

For a Poisson distribution with unit mean, mean deviation about mean is

• twice the standard deviation

• 2/e times the standard deviation

• twice the mean

• 2/e times the mean

Which of the following statements about the P value do you believe to be true?

• The P value is the probability that the null hypothesis is true.  

• The P value is the probability that the alternative hypothesis is true.  

• The P value is the probability of obtaining the observed or more extreme results if the alternative hypothesis is true.

• The P value is the probability of obtaining the observed results or results which are more extreme if the null hypothesis is true.

Which of the following statements is NOT true regarding linear regression?

• It identifies significant predictors for a continuous outcome variable.

• It predicts the outcome of a binary variable with continuous variables.

• It quantifies a relationship between two continuous variables.

• It models a linear relationship between two continuous variables.

Repetitive and Predictable movement around the trend line in one year or less is called

• Trend

• Seasonal Variation

• Cyclic variation

• Systematic variation

A time series consists of data arranged

• Chronologically

• Geographically

• Serially

• Intermittently

Farmer Joe's apple tree farm is set up in 100 rows.  He counts the number of apples produced on every 10th row to estimate the number apples produced on the whole farm.  This is _____________ sampling.

• Systematic

• Simple

• Stratified

• Cluster

What is a characteristic of a population?

• unit

• sample

• parameter

• statistic

 

The first census in India was taken in the year

• 1877

• 1872

• 1881

• 1876

Most students selected at random to a sample are women. The characteristic that most of the sample consists of women is an example of

• population parameter

• statistical anomaly

• inferential statistic

• sample statistic

Which of the following is not a categorical or qualitative variable?

• blood type

• gender

• height

• civil status