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1)
How many number of times will the digit ‘7' be written when listing the integers from 1 to 1000?
- A) 271
- B) 300
- C) 252
- D) 304
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2)
The moving averages represent ------------------
- A) Time series variations
- B) Co-efficient of variations
- C) Statistical Dispersion
- D) Absolute deviation
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3)
The class frequency is
- A) The number of observations in each class
- B) The difference between consecutive lower class limits
- C) Always contains at least 5 observations
- D) Usually a multiple of the lower limit of the first class
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4)
If the regression equation is equal to 23.6 - 54.2X, then 23.6 is the _________ while -54.2 is the ________ of the regression line.
- A) slope, intercept
- B) intercept, slope
- C) slope, regression coefficient
- D) radius, intercept
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5)
If mean scores of midterm and final term of a student is 78% and 80%. Also variances are 106 and 77 then
- A) Midterm has greater variation in marks than Final term
- B) Final term has greater variation in marks than Midterm
- C) No variation in midterm and final term marks
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6)
The correlation coefficient between x and y shows
- A) Whether y depends on x
- B) Whether y depends on x
- C) whether there is any relation between x and y
- D) whether there is a linear relation between x and y
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7)
The equation of the regression line is 2y + 5x - 3 = 0. What will be the slope and intercept of the line?
- A) slope = -5, intercept = 3
- B) slope = 5, intercept = -3
- C) slope = -2.5, intercept = 1.5
- D) slope = 2.5, intercept = -1.5
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8)
Which is incorrect?
- A) The mode is a measurement that records value
- B) A bar graph is same as line graph
- C) A mean may cause distortions
- D) A circle graph is based on 360∞
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9)
Which one of the following is not a component of the multiplicative time series model
- A) trend
- B) irregular variation
- C) regression trend
- D) seasonality
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10)
Break Even point is a point at which neither a profit nor ----- is made.
- A) Gain
- B) Loss
- C) Sale
- D) cost
