Write the Following Expression Without Summation Signs $$\sum_{i=2}^{5} x_{i} y_{i}$$

Q47: An investor purchased a particular stock on

Q48: To determine the quartiles of a set

Q49: Write the following expression as a

Q50: The grades obtained on a test

Q51: In calculating a weighted mean, the denominator

Q52: The mean is _ larger than the

Q54: The number of sales of homes having

Q55: A pet supply store advertised the

Q56: The prices (in dollars) of 16

Q57: For the data 2, 10, 20, 15,