Molly\'s Candle Shop has several retail stores in the coastal areas of North and

Question

Molly's Candle Shop has several retail stores in the coastal areas of North and South Carolina. Many of Molly's customers ask her to ship their purchases. The following chart shows the number of packages shipped per day for the last 100 days. Picture (a) What is this chart called? Histogram Frequency polygon Bar chart (b) What is the total number of frequencies? 100 (c) What is the class interval? 5 (d) What is the class frequency for the 25 to 30 class? 10 (e) What is the relative frequency of the 25 up to 30 class? (Round your answer to 4 decimal places.) .10 (f) What is the midpoint of the 10 up to 15 class? (Round your answer to 4 decimal place.) 12.5 (g) On how many days were there 5 or more packages shipped?

Explanation / Answer

(a) The chart is called Histoigram. (Ans).

(b) The total number of frequencies = 5 + 13 + 28 + 23 + 18 + 10 + 3 = 100 days. (Ans).

(c) The class interval is 5 packages. (Ans).

(d) The class frequency for the 25 to 30 class is 10. (Ans).

(e) The relative frequency for the 25 to 30 class is = 10 / 100 = 0.10. (Ans).

(f) The mid-point of the 10 to 15 class is = (10 + 15) / 2 = 12.5. (Ans).

(g) The number of days in which 5 or more packages shipped = 13 + 28 + 23 + 18 + 10 + 3 = 95 days. (Ans).

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