Bs2, Part 2

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Ingeson

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Quizzes Created: 1 | Total Attempts: 465

Questions: 52 | Attempts: 465 | Updated: Mar 21, 2023

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Dec 11, 2018

Quiz Created by
Ingeson

Bs2, Part 2

The price relative is a price index that is determined by

A composite price index based on the prices of a group of items is known as the

A weighted aggregate price index where the weight for each item is its base period quantity is known as the

A monthly price index that uses the price changes in consumer goods and services for measuring the changes in consumer prices over time is known as the

A group of observations measured at successive time intervals is known as

A component of the time series model that results in the multi-period above-trend and below-trend behavior of a time series is

The model which assumes that the actual time series value is the product of its components is the

A method that uses a weighted average of past values for arriving at smoothed time series values is known as

In the linear trend equation T = b0 + b1t, b1 represents the

In the linear trend equation T = b0 + b1t, b0 represents the

A parameter of the exponential smoothing model that provides the weight given to the most recent time series value in the calculation of the forecast value is known as the

One measure of the accuracy of a forecasting model is

The trend component must be linear

If historical data are not available, one would forecast using a qualitative approach

The price of an item is graphed. Over time, there has been a general increase in price, possibly due to inflation. The time series component used to explain the long term increase is the

The sales of appliance manufacturers are tied closely to the status of the economy. If the economy is doing well, in general, sales are better. The sales for an appliance manufacturer time series would show a significant

The electricity use in Wisconsin time series peaks in July and August as the use of air conditioning increases. The increase at approximately the same time every summer is best explained by the

The components that are usually considered predictable are the

The component that must be in every time series is the

The moving average forecasting model presented in the text is appropriate for a time series with the following component(s)

The exponential forecasting model presented in the text is appropriate for a time series with the following component(s)

N forecasting, the purpose of the mean squared error is to

A collection of statistical methods that generally requires very few, if any assumptions about the population distribution is known as

Which of the following tests would be an example of a nonparametric method

A nonparametric method for determining the differences between two populations based on two matched samples where only preference data is required is the

When ranking combined data in a Wilcoxon signed rank test, the data that receives a rank of 1 is the

The collection of statistical methods that require assumptions about the population is known as

The Spearman rank-correlation coefficient is

Which one do you like?

The level of measurement that allows for the rank ordering of data items is

The level of measurement that is simply a label for the purpose of identifying an item is

The labeling of parts as "defective" or "nondefective" is an example of

Nonparametric methods are often referred to as distribution-free methods.

Nonparametric statistical methods are not applicable to ordinal data.

The sign test can be used to test whether individuals prefer one item over another.

With the sign test, if the null hypothesis is true, the number of successes follows the

With the sign test, if the null hypothesis is true and the sample size is large, the number of successes may be approximated by the

With the Wilcoxon signed-rank test, we must assume the populations sampled from are normally distributed.

The Wilcoxon signed-rank test uses paired differences to test whether two populations are identical.

With the Wilcoxon signed-rank test, the expected value of the sum of signed ranks is equal to the sample size.

In a Wilcoxon signed-rank test, the two samples each have n =17. The expected value of is t

With the Mann-Whitney-Wilcoxon test, we need to know only the two sample sizes to compute the standard deviation of the rank sum.

With the Mann-Whitney-Wilcoxon test, we need to know only the two sample sizes to compute the expected value of the rank sum.

Is [your statement here] true or false?

For a Mann-Whitney-Wilcoxon test, the first and second samples have sizes 15 and 24, respectively. The expected value of T is

The Spearman rank-correlation coefficient can be computed only if quantitative data are available for the variables.

The population from which the sample is actually selected is

The target population and the sampled population

The error that occurs because a sample, and not the entire population, is used to estimate a population parameter is a

Stratified random sampling is a method of selecting a sample in which