Question

大神 大神 帮我看看这题什么意思好嘛？我下午要交了 这个题一直弄不懂

4. THE MARKETING RESEARCH CASE
60 randomly selected shoppers have rated a new bottle design for a popular soft drink. The data are given below. (Data set: Design)
34 33 33 29 26 33 28 25 32 33
32 25 27 33 22 27 32 33 32 29
24 30 20 34 31 32 30 35 33 31
32 28 30 31 31 33 29 27 34 31
31 28 33 31 32 28 26 29 32 34
32 30 34 32 30 30 32 31 29 33
a. Find the number of classes that should be used to construct a frequency distribution and histogram for the bottle design ratings.
b. If we round up to the nearest whole rating point, show that we should employ a class length equal to 3.
c. Develop a frequency distribution.
d. Use Excel(MegaStat) to draw the frequency histogram for the ratings data, and describe the distribution shape.
我没有财富了。。大神们救救我

Answer 1

考考大家： 这是一道可以测出一个人有没有商业头脑的数学题。
王师傅是卖鱼的，一斤鱼进价45元，现亏本大甩卖，顾客35元买了一公斤，给了王师傅100元假钱，王师傅没零钱，于是找邻居换了100元。事后邻居存钱过程中发现钱是假的，被银行没收了，王师傅又赔了邻居100元，请问王师傅一共亏了多少?
注意：斤与公斤
一共亏了100+（45×2-35）=100+55=155元