Ivy Software Business Math and Statistics Exam ACTUAL EXAM 2026/2027 | Questions and 100% Verified Correct Detailed Answers | Graded A+ | Pass Guaranteed - A+ Graded

Ivy Software Business Math and Statistics
Exam ACTUAL EXAM 2026/2027 |
Questions and 100% Verified Correct
Detailed Answers | Graded A+ | Pass
Guaranteed - A+ Graded

The Atlanta Braves marketing staff knows it has 20,000 seats in the
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stadium priced at $20 per ticket, 13,000 priced at $30 per ticket, and
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17,000 priced at
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$50 per ticket. Jim says that the marketing materials should say that
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average ticket price is $30, Jill says it should be $33, and Fred says it should
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be $35.20. Who is most correct?
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a. Jim
b. Jill
c. Fred
d. none of the above ..........ANSWER. .... b. Jill
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When analyzing data where a steady increase or decrease over time can be
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observed, which method of forecasting would best fit and would probably
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predict a similar increase or decrease?
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a. Modified Trend Method n n




b. Weighted Series Method n n




c. Trend Analysis Method n n




d. Normal Curve Method n n




e. Moving Average Method ..........ANSWER. .... c. Trend Analysis Method
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,Weighting factors for a weighted moving average forecast
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a. weight the most recent data heaviest.
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b. weight the oldest data heaviest. n n n n




c. weight all the data the same. n n n n n




d. weight the data in accordance with natural business cycles.
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..........ANSWER. ......a. weight the most recent data heaviest. n n n n n n




When gathering times series data for a trend analysis, it is important to
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collect the data at the same time each period because
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a. it's easier to remember.
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b. it reduces variation.
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c. it increases accuracy.
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d. all of the above.
n n n




e. none of the above. ..........ANSWER......d. all of the above.
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Scatter Diagram ..........ANSWER...... displays data of two variables. Similar
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to those done in time series except that the data follows no clear progression
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nthrough time. n




True/False: A regression analysis attempts to find the line through a
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scatter of data points which minimizes the sum of the squared deviations
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nof the points from the line. ..........ANSWER. True. The line that
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nminimizes the n


sum of the squared deviations of the data points from it is referred to as
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nhaving the best fit. n n n

,True/False: The coefficient of determination is the unexplained variation
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divided by the total variation. ..........ANSWER. ... False: it is the explained
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variation divided by the total variation.
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True/False: Suppose that two judges, Bill and Ted, each score five
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ncompetitive divers using a scale from 1 to 10 (with 10 being the best). The
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ncorrelation coefficient between Bill's and Ted's scores is 1, which means
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nthat Bill and Ted gave the divers the same score. ..........ANSWER.
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............................................................................................................ False. The n


correlation coefficient measures the strength of a linear relationship
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nbetween Bill & Ted's scores, not whether one's scores are lower or higher or
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nthe same as the other's scores. For example, a correlation coefficient of 1
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ncould be obtained by Ted giving scores of 1,2,3,4,5 and Bill giving scores of
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n2,4,6,8,10 to the same divers. n n n n




True/False: the residual is the difference between the actual value and
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the predicted value of a dependent variable. ..........ANSWER. True:
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The
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difference between the Y-value of a data point and the predicted value
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corresponding to it on the regression line is called the residual.
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True/False: if r^2 of 0.5 means that as x goes up, y goes down, and vice versa.
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..........ANSWER. ......False: r^2 is the coefficient of determination, which tells n n n n n n n n


us how much of the scatter of data points is explained by the regression
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nmodel. The coefficient of correlation (r) would tell us which way the y
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nwould change (increase or decrease) as x changes.
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Zero-one or dummy variable ..........ANSWER...... One that cannot be given a
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numerical value n




True/False: a correlation coefficient of -2 means that as x goes up, so does y.
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..........ANSWER. ......False: a negative correlation coefficient means that as x n n n n n n n n

, increases, y decreases. Also, it is not possible to have -2 as a correlation
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ncoefficient.


Susan wants to study the effect of water on the growth of flowers in her
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garden. She determines a regression line where water is the independent
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variable (measured in fluid ounces) and flower growth is the dependent
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variable (measured in cm). If one of her flowers is 40 cm tall, and the
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regression line is y = 15 + 5x, estimate how many fluid ounces of water it
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has been given.
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A) 20
B) 215
C) 5
D) 115 ..........ANSWER. .... C) 5
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Plug 40 cm in for y and solve for x.
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True/False: In a study, the correlation coefficient between class attendance
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nand grades for a group of students was 0.18. Thus 3.24% of the variation
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nin grades was explained by differences in class attendance.
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..........ANSWER. ......True. The coefficient of determination is the square of n n n n n n n n


the correlation coefficient.
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Dependent variable ..........ANSWER. ..... The variable the forecaster wishes to
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predict


True/False: Simple regression is made up of one independent and one
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dependent variable, while multiple regression is made up of one
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independent and many dependent variables. ..........ANSWER.....False:
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multiple regression is made up of one dependent and many independent
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variables.
n